./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.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_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/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_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/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_c7c97181-6311-463c-87c7-df915e771011/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 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --- 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 17:26:29,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:26:29,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:26:29,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:26:29,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:26:29,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:26:29,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:26:29,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:26:29,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:26:29,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:26:29,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:26:29,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:26:29,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:26:29,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:26:29,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:26:29,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:26:29,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:26:29,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:26:29,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:26:29,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:26:29,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:26:29,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:26:29,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:26:29,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:26:29,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:26:29,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:26:29,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:26:29,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:26:29,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:26:29,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:26:29,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:26:29,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:26:29,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:26:29,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:26:29,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:26:29,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:26:29,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:26:29,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:26:29,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:26:29,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:26:29,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:26:29,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:26:29,949 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:26:29,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:26:29,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:26:29,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:26:29,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:26:29,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:26:29,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:26:29,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:26:29,956 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:26:29,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:26:29,957 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:26:29,957 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:26:29,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:26:29,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:26:29,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:26:29,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:26:29,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:26:29,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:26:29,959 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:26:29,959 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:26:29,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:26:29,960 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:26:29,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:26:29,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:26:29,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:26:29,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:26:29,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:26:29,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:26:29,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:26:29,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:26:29,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:26:29,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:26:29,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:26:29,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:26:29,963 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:26:29,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:26:29,963 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_c7c97181-6311-463c-87c7-df915e771011/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 [2022-11-25 17:26:30,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:26:30,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:26:30,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:26:30,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:26:30,330 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:26:30,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-11-25 17:26:33,504 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:26:33,832 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:26:33,832 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-11-25 17:26:33,861 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/data/e31b8a4bb/b3b22b9fc17c400fb355d2d6b3a82796/FLAGc04d66164 [2022-11-25 17:26:33,878 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/data/e31b8a4bb/b3b22b9fc17c400fb355d2d6b3a82796 [2022-11-25 17:26:33,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:26:33,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:26:33,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:26:33,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:26:33,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:26:33,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:26:33" (1/1) ... [2022-11-25 17:26:33,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc77f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:33, skipping insertion in model container [2022-11-25 17:26:33,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:26:33" (1/1) ... [2022-11-25 17:26:33,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:26:33,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:26:34,503 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_c7c97181-6311-463c-87c7-df915e771011/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-11-25 17:26:34,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:26:34,572 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:26:34,628 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_c7c97181-6311-463c-87c7-df915e771011/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-11-25 17:26:34,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:26:34,737 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:26:34,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34 WrapperNode [2022-11-25 17:26:34,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:26:34,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:26:34,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:26:34,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:26:34,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,829 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 217 [2022-11-25 17:26:34,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:26:34,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:26:34,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:26:34,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:26:34,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:26:34,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:26:34,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:26:34,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:26:34,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (1/1) ... [2022-11-25 17:26:34,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:26:34,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:34,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:26:34,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:26:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:26:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:26:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:26:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:26:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:26:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:26:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 17:26:34,975 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 17:26:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:26:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:26:34,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:26:34,977 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 17:26:35,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:26:35,115 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:26:35,648 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:26:35,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:26:35,671 INFO L300 CfgBuilder]: Removed 22 assume(true) statements. [2022-11-25 17:26:35,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:26:35 BoogieIcfgContainer [2022-11-25 17:26:35,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:26:35,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:26:35,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:26:35,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:26:35,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:26:33" (1/3) ... [2022-11-25 17:26:35,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e79590c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:26:35, skipping insertion in model container [2022-11-25 17:26:35,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:34" (2/3) ... [2022-11-25 17:26:35,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e79590c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:26:35, skipping insertion in model container [2022-11-25 17:26:35,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:26:35" (3/3) ... [2022-11-25 17:26:35,693 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2022-11-25 17:26:35,704 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:26:35,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:26:35,717 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-25 17:26:35,717 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:26:35,839 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 17:26:35,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 236 transitions, 480 flow [2022-11-25 17:26:36,051 INFO L130 PetriNetUnfolder]: 43/315 cut-off events. [2022-11-25 17:26:36,051 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:26:36,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 315 events. 43/315 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1027 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2022-11-25 17:26:36,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 236 transitions, 480 flow [2022-11-25 17:26:36,078 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 231 transitions, 470 flow [2022-11-25 17:26:36,082 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:26:36,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 231 transitions, 470 flow [2022-11-25 17:26:36,110 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 231 transitions, 470 flow [2022-11-25 17:26:36,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 231 transitions, 470 flow [2022-11-25 17:26:36,215 INFO L130 PetriNetUnfolder]: 41/310 cut-off events. [2022-11-25 17:26:36,216 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:26:36,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 310 events. 41/310 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1055 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2022-11-25 17:26:36,230 INFO L119 LiptonReduction]: Number of co-enabled transitions 11570 [2022-11-25 17:26:45,137 INFO L134 LiptonReduction]: Checked pairs total: 23204 [2022-11-25 17:26:45,137 INFO L136 LiptonReduction]: Total number of compositions: 226 [2022-11-25 17:26:45,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:26:45,160 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;@7c3fa23a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:26:45,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-25 17:26:45,161 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:26:45,162 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:26:45,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:45,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:26:45,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:26:45,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:45,168 INFO L85 PathProgramCache]: Analyzing trace with hash 908, now seen corresponding path program 1 times [2022-11-25 17:26:45,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:45,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635075684] [2022-11-25 17:26:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:45,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:45,285 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 17:26:45,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:45,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635075684] [2022-11-25 17:26:45,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635075684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:45,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:45,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:26:45,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92996069] [2022-11-25 17:26:45,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:45,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:26:45,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:45,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:26:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:26:45,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 462 [2022-11-25 17:26:45,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 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 17:26:45,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:45,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 462 [2022-11-25 17:26:45,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:45,536 INFO L130 PetriNetUnfolder]: 477/1042 cut-off events. [2022-11-25 17:26:45,537 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:26:45,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 1042 events. 477/1042 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5888 event pairs, 432 based on Foata normal form. 156/903 useless extension candidates. Maximal degree in co-relation 1937. Up to 952 conditions per place. [2022-11-25 17:26:45,543 INFO L137 encePairwiseOnDemand]: 435/462 looper letters, 47 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2022-11-25 17:26:45,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 212 flow [2022-11-25 17:26:45,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:26:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:26:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 490 transitions. [2022-11-25 17:26:45,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2022-11-25 17:26:45,559 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 490 transitions. [2022-11-25 17:26:45,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 490 transitions. [2022-11-25 17:26:45,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:45,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 490 transitions. [2022-11-25 17:26:45,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 245.0) internal successors, (490), 2 states have internal predecessors, (490), 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 17:26:45,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 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 17:26:45,576 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 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 17:26:45,578 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 172 flow. Second operand 2 states and 490 transitions. [2022-11-25 17:26:45,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 212 flow [2022-11-25 17:26:45,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:26:45,584 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 118 flow [2022-11-25 17:26:45,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2022-11-25 17:26:45,590 INFO L288 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2022-11-25 17:26:45,590 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 118 flow [2022-11-25 17:26:45,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 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 17:26:45,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:45,591 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:26:45,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:26:45,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:26:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:45,593 INFO L85 PathProgramCache]: Analyzing trace with hash 27780447, now seen corresponding path program 1 times [2022-11-25 17:26:45,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:45,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283607442] [2022-11-25 17:26:45,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:45,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:45,839 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 17:26:45,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:45,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283607442] [2022-11-25 17:26:45,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283607442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:45,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:45,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:45,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320700944] [2022-11-25 17:26:45,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:45,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:45,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:45,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:45,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:45,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 462 [2022-11-25 17:26:45,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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 17:26:45,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:45,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 462 [2022-11-25 17:26:45,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:46,057 INFO L130 PetriNetUnfolder]: 436/945 cut-off events. [2022-11-25 17:26:46,057 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:26:46,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 945 events. 436/945 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5770 event pairs, 36 based on Foata normal form. 0/690 useless extension candidates. Maximal degree in co-relation 1824. Up to 781 conditions per place. [2022-11-25 17:26:46,063 INFO L137 encePairwiseOnDemand]: 457/462 looper letters, 62 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2022-11-25 17:26:46,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 284 flow [2022-11-25 17:26:46,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2022-11-25 17:26:46,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48773448773448774 [2022-11-25 17:26:46,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2022-11-25 17:26:46,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2022-11-25 17:26:46,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:46,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2022-11-25 17:26:46,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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 17:26:46,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 17:26:46,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 17:26:46,075 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 118 flow. Second operand 3 states and 676 transitions. [2022-11-25 17:26:46,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 284 flow [2022-11-25 17:26:46,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:26:46,078 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 134 flow [2022-11-25 17:26:46,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2022-11-25 17:26:46,079 INFO L288 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2022-11-25 17:26:46,079 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 134 flow [2022-11-25 17:26:46,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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 17:26:46,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:46,080 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:26:46,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:26:46,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:26:46,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:46,081 INFO L85 PathProgramCache]: Analyzing trace with hash 27780415, now seen corresponding path program 1 times [2022-11-25 17:26:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:46,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531588434] [2022-11-25 17:26:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:46,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:46,212 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 17:26:46,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:46,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531588434] [2022-11-25 17:26:46,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531588434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:46,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:46,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:26:46,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799967584] [2022-11-25 17:26:46,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:46,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:46,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:46,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:46,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:46,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 462 [2022-11-25 17:26:46,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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 17:26:46,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:46,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 462 [2022-11-25 17:26:46,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:46,434 INFO L130 PetriNetUnfolder]: 416/918 cut-off events. [2022-11-25 17:26:46,434 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-25 17:26:46,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1882 conditions, 918 events. 416/918 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5758 event pairs, 0 based on Foata normal form. 19/724 useless extension candidates. Maximal degree in co-relation 1876. Up to 818 conditions per place. [2022-11-25 17:26:46,440 INFO L137 encePairwiseOnDemand]: 459/462 looper letters, 62 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2022-11-25 17:26:46,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 296 flow [2022-11-25 17:26:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:46,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2022-11-25 17:26:46,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4884559884559885 [2022-11-25 17:26:46,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2022-11-25 17:26:46,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2022-11-25 17:26:46,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:46,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2022-11-25 17:26:46,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 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 17:26:46,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 17:26:46,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 17:26:46,450 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 134 flow. Second operand 3 states and 677 transitions. [2022-11-25 17:26:46,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 296 flow [2022-11-25 17:26:46,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:26:46,454 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 130 flow [2022-11-25 17:26:46,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2022-11-25 17:26:46,455 INFO L288 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2022-11-25 17:26:46,455 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 130 flow [2022-11-25 17:26:46,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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 17:26:46,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:46,456 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 17:26:46,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:26:46,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:26:46,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:46,458 INFO L85 PathProgramCache]: Analyzing trace with hash 927264876, now seen corresponding path program 1 times [2022-11-25 17:26:46,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:46,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495085722] [2022-11-25 17:26:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:46,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:26:46,480 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:26:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:26:46,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:26:46,547 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:26:46,549 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-25 17:26:46,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-25 17:26:46,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-25 17:26:46,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-25 17:26:46,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-25 17:26:46,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-25 17:26:46,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-25 17:26:46,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-25 17:26:46,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-25 17:26:46,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-25 17:26:46,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-25 17:26:46,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-25 17:26:46,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-25 17:26:46,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-25 17:26:46,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-25 17:26:46,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-25 17:26:46,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-25 17:26:46,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-25 17:26:46,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-25 17:26:46,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-25 17:26:46,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-25 17:26:46,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:26:46,557 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 17:26:46,560 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:26:46,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:26:46,606 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:26:46,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 303 transitions, 624 flow [2022-11-25 17:26:46,726 INFO L130 PetriNetUnfolder]: 72/498 cut-off events. [2022-11-25 17:26:46,726 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:26:46,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 498 events. 72/498 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1960 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 317. Up to 12 conditions per place. [2022-11-25 17:26:46,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 303 transitions, 624 flow [2022-11-25 17:26:46,738 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 301 transitions, 620 flow [2022-11-25 17:26:46,739 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:26:46,739 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 301 transitions, 620 flow [2022-11-25 17:26:46,741 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 301 transitions, 620 flow [2022-11-25 17:26:46,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 301 transitions, 620 flow [2022-11-25 17:26:46,823 INFO L130 PetriNetUnfolder]: 71/496 cut-off events. [2022-11-25 17:26:46,824 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:26:46,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 496 events. 71/496 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2010 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 12 conditions per place. [2022-11-25 17:26:46,849 INFO L119 LiptonReduction]: Number of co-enabled transitions 34060 [2022-11-25 17:26:58,867 INFO L134 LiptonReduction]: Checked pairs total: 84944 [2022-11-25 17:26:58,868 INFO L136 LiptonReduction]: Total number of compositions: 305 [2022-11-25 17:26:58,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:26:58,871 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;@7c3fa23a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:26:58,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-25 17:26:58,872 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:26:58,872 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:26:58,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:58,873 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:26:58,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 17:26:58,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:58,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1575, now seen corresponding path program 1 times [2022-11-25 17:26:58,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:58,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029920610] [2022-11-25 17:26:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:58,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:58,882 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 17:26:58,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:58,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029920610] [2022-11-25 17:26:58,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029920610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:58,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:58,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:26:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663785321] [2022-11-25 17:26:58,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:58,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:26:58,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:26:58,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:26:58,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 608 [2022-11-25 17:26:58,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 117 transitions, 252 flow. Second operand has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:58,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:58,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 608 [2022-11-25 17:26:58,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:01,861 INFO L130 PetriNetUnfolder]: 18399/29057 cut-off events. [2022-11-25 17:27:01,861 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-11-25 17:27:01,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56172 conditions, 29057 events. 18399/29057 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 216697 event pairs, 17082 based on Foata normal form. 4073/25087 useless extension candidates. Maximal degree in co-relation 23526. Up to 27001 conditions per place. [2022-11-25 17:27:02,101 INFO L137 encePairwiseOnDemand]: 572/608 looper letters, 68 selfloop transitions, 0 changer transitions 0/81 dead transitions. [2022-11-25 17:27:02,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 316 flow [2022-11-25 17:27:02,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:27:02,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:27:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 626 transitions. [2022-11-25 17:27:02,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148026315789473 [2022-11-25 17:27:02,104 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 626 transitions. [2022-11-25 17:27:02,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 626 transitions. [2022-11-25 17:27:02,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:02,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 626 transitions. [2022-11-25 17:27:02,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 313.0) internal successors, (626), 2 states have internal predecessors, (626), 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 17:27:02,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 608.0) internal successors, (1824), 3 states have internal predecessors, (1824), 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 17:27:02,111 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 608.0) internal successors, (1824), 3 states have internal predecessors, (1824), 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 17:27:02,111 INFO L175 Difference]: Start difference. First operand has 85 places, 117 transitions, 252 flow. Second operand 2 states and 626 transitions. [2022-11-25 17:27:02,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 316 flow [2022-11-25 17:27:02,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:27:02,116 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 180 flow [2022-11-25 17:27:02,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=180, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2022-11-25 17:27:02,118 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2022-11-25 17:27:02,118 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 180 flow [2022-11-25 17:27:02,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:02,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:02,120 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:27:02,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:27:02,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 17:27:02,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:02,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1506748993, now seen corresponding path program 1 times [2022-11-25 17:27:02,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:02,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467112190] [2022-11-25 17:27:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:02,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:02,246 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 17:27:02,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:02,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467112190] [2022-11-25 17:27:02,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467112190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:02,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:02,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:27:02,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3390162] [2022-11-25 17:27:02,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:02,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:27:02,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:02,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:27:02,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:27:02,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 608 [2022-11-25 17:27:02,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 17:27:02,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:02,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 608 [2022-11-25 17:27:02,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:04,829 INFO L130 PetriNetUnfolder]: 17699/27960 cut-off events. [2022-11-25 17:27:04,829 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-11-25 17:27:04,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54052 conditions, 27960 events. 17699/27960 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 206566 event pairs, 16418 based on Foata normal form. 0/20454 useless extension candidates. Maximal degree in co-relation 54047. Up to 25976 conditions per place. [2022-11-25 17:27:04,962 INFO L137 encePairwiseOnDemand]: 606/608 looper letters, 66 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2022-11-25 17:27:04,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 80 transitions, 312 flow [2022-11-25 17:27:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:27:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:27:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 839 transitions. [2022-11-25 17:27:04,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45997807017543857 [2022-11-25 17:27:04,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 839 transitions. [2022-11-25 17:27:04,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 839 transitions. [2022-11-25 17:27:04,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:04,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 839 transitions. [2022-11-25 17:27:04,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 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 17:27:04,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 608.0) internal successors, (2432), 4 states have internal predecessors, (2432), 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 17:27:04,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 608.0) internal successors, (2432), 4 states have internal predecessors, (2432), 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 17:27:04,974 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 180 flow. Second operand 3 states and 839 transitions. [2022-11-25 17:27:04,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 80 transitions, 312 flow [2022-11-25 17:27:04,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:27:04,981 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 180 flow [2022-11-25 17:27:04,983 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2022-11-25 17:27:04,987 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -2 predicate places. [2022-11-25 17:27:04,989 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 180 flow [2022-11-25 17:27:04,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 17:27:04,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:04,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:27:04,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:27:04,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 17:27:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:04,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1506749068, now seen corresponding path program 1 times [2022-11-25 17:27:04,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:04,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080461091] [2022-11-25 17:27:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:04,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:05,049 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 17:27:05,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:05,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080461091] [2022-11-25 17:27:05,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080461091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:05,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:05,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:27:05,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048153552] [2022-11-25 17:27:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:05,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:27:05,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:05,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:27:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:27:05,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 608 [2022-11-25 17:27:05,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 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 17:27:05,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:05,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 608 [2022-11-25 17:27:05,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:07,066 INFO L130 PetriNetUnfolder]: 16205/25870 cut-off events. [2022-11-25 17:27:07,066 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-11-25 17:27:07,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50577 conditions, 25870 events. 16205/25870 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 201832 event pairs, 987 based on Foata normal form. 0/19117 useless extension candidates. Maximal degree in co-relation 50571. Up to 22881 conditions per place. [2022-11-25 17:27:07,214 INFO L137 encePairwiseOnDemand]: 603/608 looper letters, 99 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2022-11-25 17:27:07,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 115 transitions, 454 flow [2022-11-25 17:27:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:27:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:27:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-11-25 17:27:07,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2022-11-25 17:27:07,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-11-25 17:27:07,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-11-25 17:27:07,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:07,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-11-25 17:27:07,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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 17:27:07,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 608.0) internal successors, (2432), 4 states have internal predecessors, (2432), 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 17:27:07,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 608.0) internal successors, (2432), 4 states have internal predecessors, (2432), 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 17:27:07,228 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 180 flow. Second operand 3 states and 872 transitions. [2022-11-25 17:27:07,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 115 transitions, 454 flow [2022-11-25 17:27:07,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 115 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:27:07,235 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 195 flow [2022-11-25 17:27:07,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2022-11-25 17:27:07,237 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 0 predicate places. [2022-11-25 17:27:07,237 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 195 flow [2022-11-25 17:27:07,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 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 17:27:07,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:07,238 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:07,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:27:07,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 17:27:07,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:07,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1165464648, now seen corresponding path program 1 times [2022-11-25 17:27:07,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:07,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353823564] [2022-11-25 17:27:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:07,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:07,547 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 17:27:07,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:07,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353823564] [2022-11-25 17:27:07,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353823564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:07,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:07,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:27:07,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011982359] [2022-11-25 17:27:07,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:07,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:27:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:27:07,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:27:07,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 608 [2022-11-25 17:27:07,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 251.5) internal successors, (1006), 4 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:07,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:07,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 608 [2022-11-25 17:27:07,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:09,833 INFO L130 PetriNetUnfolder]: 16726/26909 cut-off events. [2022-11-25 17:27:09,833 INFO L131 PetriNetUnfolder]: For 2475/2475 co-relation queries the response was YES. [2022-11-25 17:27:09,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54035 conditions, 26909 events. 16726/26909 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 1052. Compared 202023 event pairs, 6369 based on Foata normal form. 0/20919 useless extension candidates. Maximal degree in co-relation 54028. Up to 20919 conditions per place. [2022-11-25 17:27:09,939 INFO L137 encePairwiseOnDemand]: 599/608 looper letters, 120 selfloop transitions, 7 changer transitions 0/140 dead transitions. [2022-11-25 17:27:09,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 140 transitions, 590 flow [2022-11-25 17:27:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:27:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:27:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1134 transitions. [2022-11-25 17:27:09,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4662828947368421 [2022-11-25 17:27:09,943 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1134 transitions. [2022-11-25 17:27:09,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1134 transitions. [2022-11-25 17:27:09,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:09,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1134 transitions. [2022-11-25 17:27:09,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 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 17:27:09,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 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 17:27:09,955 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 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 17:27:09,955 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 195 flow. Second operand 4 states and 1134 transitions. [2022-11-25 17:27:09,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 140 transitions, 590 flow [2022-11-25 17:27:09,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 140 transitions, 580 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:27:09,959 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 247 flow [2022-11-25 17:27:09,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2022-11-25 17:27:09,960 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2022-11-25 17:27:09,960 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 247 flow [2022-11-25 17:27:09,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.5) internal successors, (1006), 4 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:09,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:09,961 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:09,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:27:09,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 17:27:09,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:09,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1576291451, now seen corresponding path program 1 times [2022-11-25 17:27:09,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:09,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421975453] [2022-11-25 17:27:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:09,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:27:10,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:10,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421975453] [2022-11-25 17:27:10,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421975453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:27:10,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619614230] [2022-11-25 17:27:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:10,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:27:10,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:27:10,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:27:10,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:27:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:10,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:27:10,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:27:10,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:27:10,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:27:10,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619614230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:27:10,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:27:10,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:27:10,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433933745] [2022-11-25 17:27:10,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:27:10,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:27:10,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:10,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:27:10,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:27:10,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 608 [2022-11-25 17:27:10,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 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 17:27:10,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:10,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 608 [2022-11-25 17:27:10,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:11,063 INFO L130 PetriNetUnfolder]: 1577/2987 cut-off events. [2022-11-25 17:27:11,063 INFO L131 PetriNetUnfolder]: For 936/936 co-relation queries the response was YES. [2022-11-25 17:27:11,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7318 conditions, 2987 events. 1577/2987 cut-off events. For 936/936 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 20002 event pairs, 178 based on Foata normal form. 0/2663 useless extension candidates. Maximal degree in co-relation 7309. Up to 1871 conditions per place. [2022-11-25 17:27:11,089 INFO L137 encePairwiseOnDemand]: 605/608 looper letters, 94 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2022-11-25 17:27:11,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 106 transitions, 489 flow [2022-11-25 17:27:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:27:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:27:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1375 transitions. [2022-11-25 17:27:11,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45230263157894735 [2022-11-25 17:27:11,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1375 transitions. [2022-11-25 17:27:11,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1375 transitions. [2022-11-25 17:27:11,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:11,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1375 transitions. [2022-11-25 17:27:11,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 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 17:27:11,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 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 17:27:11,224 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 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 17:27:11,224 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 247 flow. Second operand 5 states and 1375 transitions. [2022-11-25 17:27:11,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 106 transitions, 489 flow [2022-11-25 17:27:11,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 106 transitions, 471 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-25 17:27:11,231 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 154 flow [2022-11-25 17:27:11,231 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2022-11-25 17:27:11,233 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -22 predicate places. [2022-11-25 17:27:11,233 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 154 flow [2022-11-25 17:27:11,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 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 17:27:11,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:11,234 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 17:27:11,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:27:11,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c97181-6311-463c-87c7-df915e771011/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 17:27:11,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 17:27:11,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:11,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1027944367, now seen corresponding path program 1 times [2022-11-25 17:27:11,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:11,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225028271] [2022-11-25 17:27:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:11,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:27:11,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:27:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:27:11,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:27:11,502 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:27:11,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-25 17:27:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-25 17:27:11,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-25 17:27:11,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-25 17:27:11,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-25 17:27:11,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-25 17:27:11,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-25 17:27:11,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-25 17:27:11,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-25 17:27:11,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-25 17:27:11,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-25 17:27:11,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-25 17:27:11,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-25 17:27:11,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-25 17:27:11,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-25 17:27:11,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-25 17:27:11,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-25 17:27:11,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-25 17:27:11,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-25 17:27:11,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-25 17:27:11,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-25 17:27:11,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-25 17:27:11,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-25 17:27:11,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-25 17:27:11,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-25 17:27:11,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:27:11,509 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-25 17:27:11,510 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:27:11,510 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 17:27:11,549 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:27:11,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 370 transitions, 770 flow [2022-11-25 17:27:11,694 INFO L130 PetriNetUnfolder]: 106/722 cut-off events. [2022-11-25 17:27:11,695 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 17:27:11,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 722 events. 106/722 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3161 event pairs, 1 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 506. Up to 16 conditions per place. [2022-11-25 17:27:11,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 370 transitions, 770 flow [2022-11-25 17:27:11,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 368 transitions, 766 flow [2022-11-25 17:27:11,709 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:27:11,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 368 transitions, 766 flow [2022-11-25 17:27:11,710 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 368 transitions, 766 flow [2022-11-25 17:27:11,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 368 transitions, 766 flow [2022-11-25 17:27:11,843 INFO L130 PetriNetUnfolder]: 105/720 cut-off events. [2022-11-25 17:27:11,843 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 17:27:11,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 720 events. 105/720 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3219 event pairs, 1 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 504. Up to 16 conditions per place. [2022-11-25 17:27:11,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 64350 [2022-11-25 17:27:21,768 INFO L134 LiptonReduction]: Checked pairs total: 133711 [2022-11-25 17:27:21,769 INFO L136 LiptonReduction]: Total number of compositions: 348 [2022-11-25 17:27:21,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:27:21,771 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;@7c3fa23a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:27:21,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-25 17:27:21,773 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 17:27:21,773 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:27:21,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:21,773 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:27:21,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-25 17:27:21,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:21,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2366, now seen corresponding path program 1 times [2022-11-25 17:27:21,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:21,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520529871] [2022-11-25 17:27:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:21,780 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 17:27:21,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:21,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520529871] [2022-11-25 17:27:21,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520529871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:21,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:21,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:27:21,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680050117] [2022-11-25 17:27:21,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:21,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:27:21,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:21,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:27:21,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:27:21,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 718 [2022-11-25 17:27:21,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 150 transitions, 330 flow. Second operand has 2 states, 2 states have (on average 314.5) internal successors, (629), 2 states have internal predecessors, (629), 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 17:27:21,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:21,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 718 [2022-11-25 17:27:21,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand