./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bc410c23b8a40101ed787fe72a0515ef047b7022a45484b309d3277414201100 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:56:39,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:56:39,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:56:39,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:56:39,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:56:39,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:56:39,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:56:39,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:56:39,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:56:39,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:56:39,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:56:39,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:56:39,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:56:39,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:56:39,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:56:39,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:56:39,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:56:39,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:56:39,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:56:39,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:56:39,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:56:39,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:56:39,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:56:39,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:56:39,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:56:39,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:56:39,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:56:39,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:56:39,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:56:39,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:56:39,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:56:39,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:56:39,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:56:39,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:56:39,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:56:39,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:56:39,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:56:39,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:56:39,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:56:39,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:56:39,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:56:39,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 13:56:40,016 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:56:40,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:56:40,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:56:40,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:56:40,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:56:40,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:56:40,019 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:56:40,019 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:56:40,020 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:56:40,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:56:40,020 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:56:40,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:56:40,021 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:56:40,021 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:56:40,021 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:56:40,022 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:56:40,022 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:56:40,022 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:56:40,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:56:40,023 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:56:40,024 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:56:40,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:56:40,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:56:40,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:56:40,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:56:40,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:56:40,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:56:40,026 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 13:56:40,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:56:40,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:56:40,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:56:40,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:56:40,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:56:40,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:56:40,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:56:40,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:56:40,029 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:56:40,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:56:40,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:56:40,045 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:56:40,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:56:40,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:56:40,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:56:40,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc410c23b8a40101ed787fe72a0515ef047b7022a45484b309d3277414201100 [2022-11-23 13:56:40,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:56:40,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:56:40,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:56:40,379 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:56:40,380 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:56:40,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i [2022-11-23 13:56:43,459 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:56:43,738 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:56:43,739 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i [2022-11-23 13:56:43,751 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/data/9bb81402b/3e6e707e4d2144a6acf9c0edebb37fb5/FLAGbe4b98c48 [2022-11-23 13:56:43,766 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/data/9bb81402b/3e6e707e4d2144a6acf9c0edebb37fb5 [2022-11-23 13:56:43,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:56:43,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:56:43,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:56:43,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:56:43,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:56:43,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:43" (1/1) ... [2022-11-23 13:56:43,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f734802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:43, skipping insertion in model container [2022-11-23 13:56:43,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:43" (1/1) ... [2022-11-23 13:56:43,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:56:43,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:56:44,140 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_2193d8ca-bc19-43cb-9985-46eb1d74d81c/sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i[30195,30208] [2022-11-23 13:56:44,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:56:44,175 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:56:44,237 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_2193d8ca-bc19-43cb-9985-46eb1d74d81c/sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i[30195,30208] [2022-11-23 13:56:44,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:56:44,297 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:56:44,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44 WrapperNode [2022-11-23 13:56:44,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:56:44,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:56:44,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:56:44,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:56:44,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,341 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2022-11-23 13:56:44,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:56:44,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:56:44,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:56:44,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:56:44,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,370 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:56:44,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:56:44,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:56:44,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:56:44,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (1/1) ... [2022-11-23 13:56:44,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:56:44,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:56:44,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:56:44,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2193d8ca-bc19-43cb-9985-46eb1d74d81c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:56:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:56:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-23 13:56:44,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-23 13:56:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:56:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 13:56:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:56:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:56:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:56:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-23 13:56:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-23 13:56:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:56:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 13:56:44,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:56:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:56:44,471 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 13:56:44,596 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:56:44,598 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:56:44,900 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:56:44,906 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:56:44,907 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-23 13:56:44,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:44 BoogieIcfgContainer [2022-11-23 13:56:44,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:56:44,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:56:44,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:56:44,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:56:44,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:56:43" (1/3) ... [2022-11-23 13:56:44,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be46db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:44, skipping insertion in model container [2022-11-23 13:56:44,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:44" (2/3) ... [2022-11-23 13:56:44,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be46db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:44, skipping insertion in model container [2022-11-23 13:56:44,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:44" (3/3) ... [2022-11-23 13:56:44,933 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-40.i [2022-11-23 13:56:44,941 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 13:56:44,956 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:56:44,956 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-23 13:56:44,956 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 13:56:45,070 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-23 13:56:45,129 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 13:56:45,155 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 106 transitions, 234 flow [2022-11-23 13:56:45,214 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 106 transitions, 234 flow [2022-11-23 13:56:45,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 234 flow [2022-11-23 13:56:45,326 INFO L130 PetriNetUnfolder]: 24/236 cut-off events. [2022-11-23 13:56:45,326 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-23 13:56:45,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 236 events. 24/236 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 745 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2022-11-23 13:56:45,347 INFO L119 LiptonReduction]: Number of co-enabled transitions 1474 [2022-11-23 13:56:48,369 INFO L134 LiptonReduction]: Checked pairs total: 2068 [2022-11-23 13:56:48,369 INFO L136 LiptonReduction]: Total number of compositions: 91 [2022-11-23 13:56:48,377 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 33 transitions, 88 flow [2022-11-23 13:56:48,399 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 141 states, 115 states have (on average 2.017391304347826) internal successors, (232), 140 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:48,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:56:48,425 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=FINITE_AUTOMATA, 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;@4140032f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:56:48,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-23 13:56:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 115 states have (on average 2.017391304347826) internal successors, (232), 140 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 13:56:48,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:48,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 13:56:48,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:56:48,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:48,439 INFO L85 PathProgramCache]: Analyzing trace with hash 11869038, now seen corresponding path program 1 times [2022-11-23 13:56:48,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:48,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920261720] [2022-11-23 13:56:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:48,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:56:48,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:48,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920261720] [2022-11-23 13:56:48,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920261720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:48,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:48,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:56:48,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433452766] [2022-11-23 13:56:48,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:48,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:48,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:48,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:48,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:48,853 INFO L87 Difference]: Start difference. First operand has 141 states, 115 states have (on average 2.017391304347826) internal successors, (232), 140 states have internal predecessors, (232), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:48,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:48,951 INFO L93 Difference]: Finished difference Result 75 states and 115 transitions. [2022-11-23 13:56:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:48,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2022-11-23 13:56:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:48,963 INFO L225 Difference]: With dead ends: 75 [2022-11-23 13:56:48,963 INFO L226 Difference]: Without dead ends: 59 [2022-11-23 13:56:48,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:48,969 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:48,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:56:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-23 13:56:49,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-23 13:56:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.709090909090909) internal successors, (94), 58 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 94 transitions. [2022-11-23 13:56:49,021 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 94 transitions. Word has length 4 [2022-11-23 13:56:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:49,022 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 94 transitions. [2022-11-23 13:56:49,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 94 transitions. [2022-11-23 13:56:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 13:56:49,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:49,026 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 13:56:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:56:49,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:56:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1478744456, now seen corresponding path program 1 times [2022-11-23 13:56:49,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:49,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758850634] [2022-11-23 13:56:49,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:49,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:56:49,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:56:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:56:49,099 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 13:56:49,100 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:56:49,102 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-23 13:56:49,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-23 13:56:49,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-23 13:56:49,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-23 13:56:49,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-23 13:56:49,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-23 13:56:49,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-23 13:56:49,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-23 13:56:49,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-23 13:56:49,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-23 13:56:49,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:56:49,108 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 13:56:49,110 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 13:56:49,111 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 13:56:49,135 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-23 13:56:49,138 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 13:56:49,138 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 124 transitions, 296 flow [2022-11-23 13:56:49,138 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 124 transitions, 296 flow [2022-11-23 13:56:49,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 124 transitions, 296 flow [2022-11-23 13:56:49,264 INFO L130 PetriNetUnfolder]: 107/802 cut-off events. [2022-11-23 13:56:49,264 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-23 13:56:49,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 802 events. 107/802 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4066 event pairs, 2 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2022-11-23 13:56:49,282 INFO L119 LiptonReduction]: Number of co-enabled transitions 3472 [2022-11-23 13:56:51,974 INFO L134 LiptonReduction]: Checked pairs total: 5231 [2022-11-23 13:56:51,974 INFO L136 LiptonReduction]: Total number of compositions: 102 [2022-11-23 13:56:51,979 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 43 transitions, 134 flow [2022-11-23 13:56:52,056 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1261 states, 1164 states have (on average 2.620274914089347) internal successors, (3050), 1260 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:56:52,067 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=FINITE_AUTOMATA, 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;@4140032f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:56:52,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-23 13:56:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 1261 states, 1164 states have (on average 2.620274914089347) internal successors, (3050), 1260 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 13:56:52,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:52,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 13:56:52,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:56:52,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash 598920540, now seen corresponding path program 1 times [2022-11-23 13:56:52,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:52,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267534433] [2022-11-23 13:56:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:56:52,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:52,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267534433] [2022-11-23 13:56:52,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267534433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:52,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:52,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:56:52,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936156621] [2022-11-23 13:56:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:52,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:52,149 INFO L87 Difference]: Start difference. First operand has 1261 states, 1164 states have (on average 2.620274914089347) internal successors, (3050), 1260 states have internal predecessors, (3050), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:52,295 INFO L93 Difference]: Finished difference Result 1043 states and 2409 transitions. [2022-11-23 13:56:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:52,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2022-11-23 13:56:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:52,311 INFO L225 Difference]: With dead ends: 1043 [2022-11-23 13:56:52,312 INFO L226 Difference]: Without dead ends: 987 [2022-11-23 13:56:52,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:52,313 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:52,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 12 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:56:52,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-11-23 13:56:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2022-11-23 13:56:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 946 states have (on average 2.4450317124735728) internal successors, (2313), 986 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 2313 transitions. [2022-11-23 13:56:52,400 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 2313 transitions. Word has length 5 [2022-11-23 13:56:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:52,400 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 2313 transitions. [2022-11-23 13:56:52,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 2313 transitions. [2022-11-23 13:56:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 13:56:52,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:52,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 13:56:52,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:56:52,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:56:52,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:52,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1244969870, now seen corresponding path program 1 times [2022-11-23 13:56:52,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:52,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937932710] [2022-11-23 13:56:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:52,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:56:52,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:52,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937932710] [2022-11-23 13:56:52,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937932710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:52,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:52,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:56:52,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704118319] [2022-11-23 13:56:52,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:52,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:52,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:52,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:52,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:52,476 INFO L87 Difference]: Start difference. First operand 987 states and 2313 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:52,550 INFO L93 Difference]: Finished difference Result 917 states and 2163 transitions. [2022-11-23 13:56:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:52,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2022-11-23 13:56:52,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:52,557 INFO L225 Difference]: With dead ends: 917 [2022-11-23 13:56:52,557 INFO L226 Difference]: Without dead ends: 917 [2022-11-23 13:56:52,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:52,558 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:52,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:56:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-11-23 13:56:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 917. [2022-11-23 13:56:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 2.416759776536313) internal successors, (2163), 916 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 2163 transitions. [2022-11-23 13:56:52,627 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 2163 transitions. Word has length 9 [2022-11-23 13:56:52,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:52,628 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 2163 transitions. [2022-11-23 13:56:52,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,629 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 2163 transitions. [2022-11-23 13:56:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 13:56:52,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:52,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 13:56:52,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:56:52,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:56:52,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1244969871, now seen corresponding path program 1 times [2022-11-23 13:56:52,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:52,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117090448] [2022-11-23 13:56:52,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:52,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:56:52,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:52,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117090448] [2022-11-23 13:56:52,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117090448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:52,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:52,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:56:52,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443811669] [2022-11-23 13:56:52,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:52,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:52,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:52,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:52,731 INFO L87 Difference]: Start difference. First operand 917 states and 2163 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:52,810 INFO L93 Difference]: Finished difference Result 847 states and 2013 transitions. [2022-11-23 13:56:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:52,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2022-11-23 13:56:52,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:52,814 INFO L225 Difference]: With dead ends: 847 [2022-11-23 13:56:52,814 INFO L226 Difference]: Without dead ends: 211 [2022-11-23 13:56:52,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:52,815 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:52,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 6 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:56:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-23 13:56:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-23 13:56:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 208 states have (on average 2.4375) internal successors, (507), 210 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 507 transitions. [2022-11-23 13:56:52,824 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 507 transitions. Word has length 9 [2022-11-23 13:56:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:52,825 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 507 transitions. [2022-11-23 13:56:52,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 507 transitions. [2022-11-23 13:56:52,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 13:56:52,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:52,830 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 13:56:52,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:56:52,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:56:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1879802162, now seen corresponding path program 1 times [2022-11-23 13:56:52,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:52,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037318021] [2022-11-23 13:56:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:56:52,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:56:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:56:52,908 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 13:56:52,908 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:56:52,908 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-23 13:56:52,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-23 13:56:52,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-23 13:56:52,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-23 13:56:52,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-23 13:56:52,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-23 13:56:52,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-23 13:56:52,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-23 13:56:52,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-23 13:56:52,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-23 13:56:52,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:56:52,911 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-23 13:56:52,911 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 13:56:52,911 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 13:56:52,950 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-23 13:56:52,955 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 13:56:52,955 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 142 transitions, 362 flow [2022-11-23 13:56:52,955 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 142 transitions, 362 flow [2022-11-23 13:56:52,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 362 flow [2022-11-23 13:56:53,414 INFO L130 PetriNetUnfolder]: 496/2832 cut-off events. [2022-11-23 13:56:53,414 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-23 13:56:53,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3283 conditions, 2832 events. 496/2832 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 19891 event pairs, 64 based on Foata normal form. 0/2242 useless extension candidates. Maximal degree in co-relation 1682. Up to 192 conditions per place. [2022-11-23 13:56:53,472 INFO L119 LiptonReduction]: Number of co-enabled transitions 5994 [2022-11-23 13:56:56,323 INFO L134 LiptonReduction]: Checked pairs total: 9431 [2022-11-23 13:56:56,323 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-11-23 13:56:56,324 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 51 transitions, 180 flow [2022-11-23 13:56:56,790 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10469 states, 10117 states have (on average 3.3219333794603143) internal successors, (33608), 10468 states have internal predecessors, (33608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:56,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:56:56,792 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=FINITE_AUTOMATA, 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;@4140032f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:56:56,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-23 13:56:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 10469 states, 10117 states have (on average 3.3219333794603143) internal successors, (33608), 10468 states have internal predecessors, (33608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 13:56:56,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:56,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 13:56:56,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:56:56,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:56,825 INFO L85 PathProgramCache]: Analyzing trace with hash 859366996, now seen corresponding path program 1 times [2022-11-23 13:56:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:56,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759694185] [2022-11-23 13:56:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:56,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:56:56,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:56,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759694185] [2022-11-23 13:56:56,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759694185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:56,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:56,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:56:56,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451733379] [2022-11-23 13:56:56,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:56,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:56,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:56,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:56,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:56,924 INFO L87 Difference]: Start difference. First operand has 10469 states, 10117 states have (on average 3.3219333794603143) internal successors, (33608), 10468 states have internal predecessors, (33608), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:57,247 INFO L93 Difference]: Finished difference Result 10471 states and 32365 transitions. [2022-11-23 13:56:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2022-11-23 13:56:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:57,328 INFO L225 Difference]: With dead ends: 10471 [2022-11-23 13:56:57,328 INFO L226 Difference]: Without dead ends: 9967 [2022-11-23 13:56:57,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:57,330 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:57,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:56:57,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9967 states. [2022-11-23 13:56:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9967 to 9967. [2022-11-23 13:56:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9967 states, 9749 states have (on average 3.185660067699251) internal successors, (31057), 9966 states have internal predecessors, (31057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9967 states to 9967 states and 31057 transitions. [2022-11-23 13:56:57,776 INFO L78 Accepts]: Start accepts. Automaton has 9967 states and 31057 transitions. Word has length 5 [2022-11-23 13:56:57,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:57,776 INFO L495 AbstractCegarLoop]: Abstraction has 9967 states and 31057 transitions. [2022-11-23 13:56:57,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9967 states and 31057 transitions. [2022-11-23 13:56:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 13:56:57,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:57,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 13:56:57,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:56:57,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:56:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:57,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2020379530, now seen corresponding path program 1 times [2022-11-23 13:56:57,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:57,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722374369] [2022-11-23 13:56:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:57,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:56:57,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:57,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722374369] [2022-11-23 13:56:57,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722374369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:57,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:57,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:56:57,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514880360] [2022-11-23 13:56:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:57,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:57,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:57,835 INFO L87 Difference]: Start difference. First operand 9967 states and 31057 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:58,107 INFO L93 Difference]: Finished difference Result 9081 states and 28635 transitions. [2022-11-23 13:56:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:58,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2022-11-23 13:56:58,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:58,175 INFO L225 Difference]: With dead ends: 9081 [2022-11-23 13:56:58,175 INFO L226 Difference]: Without dead ends: 9081 [2022-11-23 13:56:58,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:58,178 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:58,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 6 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:56:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2022-11-23 13:56:58,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 9081. [2022-11-23 13:56:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9081 states, 8970 states have (on average 3.1923076923076925) internal successors, (28635), 9080 states have internal predecessors, (28635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9081 states to 9081 states and 28635 transitions. [2022-11-23 13:56:58,889 INFO L78 Accepts]: Start accepts. Automaton has 9081 states and 28635 transitions. Word has length 9 [2022-11-23 13:56:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:58,890 INFO L495 AbstractCegarLoop]: Abstraction has 9081 states and 28635 transitions. [2022-11-23 13:56:58,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 9081 states and 28635 transitions. [2022-11-23 13:56:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 13:56:58,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:58,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 13:56:58,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 13:56:58,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:56:58,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2020379528, now seen corresponding path program 1 times [2022-11-23 13:56:58,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:58,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54655081] [2022-11-23 13:56:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:58,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:56:58,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:58,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54655081] [2022-11-23 13:56:58,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54655081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:58,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:58,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:56:58,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599883641] [2022-11-23 13:56:58,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:58,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:58,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:58,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:58,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:58,972 INFO L87 Difference]: Start difference. First operand 9081 states and 28635 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:59,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:59,124 INFO L93 Difference]: Finished difference Result 8195 states and 26213 transitions. [2022-11-23 13:56:59,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:59,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2022-11-23 13:56:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:59,130 INFO L225 Difference]: With dead ends: 8195 [2022-11-23 13:56:59,130 INFO L226 Difference]: Without dead ends: 991 [2022-11-23 13:56:59,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:59,132 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:59,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 6 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:56:59,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-11-23 13:56:59,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-11-23 13:56:59,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 987 states have (on average 3.2492401215805473) internal successors, (3207), 990 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 3207 transitions. [2022-11-23 13:56:59,174 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 3207 transitions. Word has length 9 [2022-11-23 13:56:59,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:59,174 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 3207 transitions. [2022-11-23 13:56:59,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:56:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 3207 transitions. [2022-11-23 13:56:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 13:56:59,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:59,180 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-23 13:56:59,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:56:59,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:56:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash -723327631, now seen corresponding path program 1 times [2022-11-23 13:56:59,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:59,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586618644] [2022-11-23 13:56:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:59,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:56:59,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:56:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:56:59,291 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 13:56:59,292 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:56:59,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-23 13:56:59,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-23 13:56:59,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-23 13:56:59,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-23 13:56:59,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-23 13:56:59,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-23 13:56:59,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-23 13:56:59,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-23 13:56:59,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-23 13:56:59,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-23 13:56:59,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 13:56:59,294 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-23 13:56:59,295 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 13:56:59,295 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-23 13:56:59,323 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-23 13:56:59,325 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 13:56:59,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 160 transitions, 432 flow [2022-11-23 13:56:59,326 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 160 transitions, 432 flow [2022-11-23 13:56:59,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 432 flow [2022-11-23 13:57:01,488 INFO L130 PetriNetUnfolder]: 2379/10862 cut-off events. [2022-11-23 13:57:01,488 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-23 13:57:01,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13027 conditions, 10862 events. 2379/10862 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 100503 event pairs, 626 based on Foata normal form. 0/8690 useless extension candidates. Maximal degree in co-relation 6464. Up to 1024 conditions per place. [2022-11-23 13:57:01,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 9040 [2022-11-23 13:57:05,099 INFO L134 LiptonReduction]: Checked pairs total: 15709 [2022-11-23 13:57:05,099 INFO L136 LiptonReduction]: Total number of compositions: 128 [2022-11-23 13:57:05,100 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 59 transitions, 230 flow [2022-11-23 13:57:08,817 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 89581 states, 88250 states have (on average 4.055320113314448) internal successors, (357882), 89580 states have internal predecessors, (357882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:08,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:57:08,829 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=FINITE_AUTOMATA, 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;@4140032f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:57:08,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-23 13:57:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 89581 states, 88250 states have (on average 4.055320113314448) internal successors, (357882), 89580 states have internal predecessors, (357882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 13:57:08,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:08,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 13:57:08,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:57:08,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:08,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1149247950, now seen corresponding path program 1 times [2022-11-23 13:57:08,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:08,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991229152] [2022-11-23 13:57:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:08,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:09,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:09,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991229152] [2022-11-23 13:57:09,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991229152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:09,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:09,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:57:09,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698586797] [2022-11-23 13:57:09,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:09,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:09,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:09,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:09,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:09,131 INFO L87 Difference]: Start difference. First operand has 89581 states, 88250 states have (on average 4.055320113314448) internal successors, (357882), 89580 states have internal predecessors, (357882), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:10,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:10,948 INFO L93 Difference]: Finished difference Result 100007 states and 390177 transitions. [2022-11-23 13:57:10,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:10,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2022-11-23 13:57:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:12,212 INFO L225 Difference]: With dead ends: 100007 [2022-11-23 13:57:12,213 INFO L226 Difference]: Without dead ends: 94687 [2022-11-23 13:57:12,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:12,215 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:12,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 12 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:57:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94687 states. [2022-11-23 13:57:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94687 to 94687. [2022-11-23 13:57:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94687 states, 93720 states have (on average 3.9686833119931713) internal successors, (371945), 94686 states have internal predecessors, (371945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94687 states to 94687 states and 371945 transitions. [2022-11-23 13:57:16,876 INFO L78 Accepts]: Start accepts. Automaton has 94687 states and 371945 transitions. Word has length 5 [2022-11-23 13:57:16,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:16,876 INFO L495 AbstractCegarLoop]: Abstraction has 94687 states and 371945 transitions. [2022-11-23 13:57:16,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand 94687 states and 371945 transitions. [2022-11-23 13:57:16,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 13:57:16,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:16,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 13:57:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 13:57:16,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:57:16,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash -460021692, now seen corresponding path program 1 times [2022-11-23 13:57:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:16,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518402330] [2022-11-23 13:57:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:57:16,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:16,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518402330] [2022-11-23 13:57:16,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518402330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:16,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:16,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:57:16,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635538660] [2022-11-23 13:57:16,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:16,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:16,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:16,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:16,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:16,918 INFO L87 Difference]: Start difference. First operand 94687 states and 371945 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:18,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:18,624 INFO L93 Difference]: Finished difference Result 85049 states and 339047 transitions. [2022-11-23 13:57:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:18,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2022-11-23 13:57:18,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:19,906 INFO L225 Difference]: With dead ends: 85049 [2022-11-23 13:57:19,906 INFO L226 Difference]: Without dead ends: 85049 [2022-11-23 13:57:19,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:19,907 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:19,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 6 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:57:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85049 states. [2022-11-23 13:57:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85049 to 85049. [2022-11-23 13:57:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85049 states, 84563 states have (on average 4.0094012747892105) internal successors, (339047), 85048 states have internal predecessors, (339047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85049 states to 85049 states and 339047 transitions. [2022-11-23 13:57:22,861 INFO L78 Accepts]: Start accepts. Automaton has 85049 states and 339047 transitions. Word has length 9 [2022-11-23 13:57:22,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:22,862 INFO L495 AbstractCegarLoop]: Abstraction has 85049 states and 339047 transitions. [2022-11-23 13:57:22,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 85049 states and 339047 transitions. [2022-11-23 13:57:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 13:57:22,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:22,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 13:57:22,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 13:57:22,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:57:22,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:22,864 INFO L85 PathProgramCache]: Analyzing trace with hash -460021691, now seen corresponding path program 1 times [2022-11-23 13:57:22,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:22,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659698705] [2022-11-23 13:57:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:22,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:22,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:22,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659698705] [2022-11-23 13:57:22,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659698705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:22,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:22,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:57:22,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400370708] [2022-11-23 13:57:22,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:22,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:22,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:22,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:22,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:22,907 INFO L87 Difference]: Start difference. First operand 85049 states and 339047 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:24,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:24,300 INFO L93 Difference]: Finished difference Result 75411 states and 306149 transitions. [2022-11-23 13:57:24,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:24,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2022-11-23 13:57:24,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:24,320 INFO L225 Difference]: With dead ends: 75411 [2022-11-23 13:57:24,320 INFO L226 Difference]: Without dead ends: 4279 [2022-11-23 13:57:24,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:24,321 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:24,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:57:24,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2022-11-23 13:57:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 4279. [2022-11-23 13:57:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4274 states have (on average 4.127983153954141) internal successors, (17643), 4278 states have internal predecessors, (17643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 17643 transitions. [2022-11-23 13:57:24,412 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 17643 transitions. Word has length 9 [2022-11-23 13:57:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:24,412 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 17643 transitions. [2022-11-23 13:57:24,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 17643 transitions. [2022-11-23 13:57:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 13:57:24,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:24,414 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:24,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 13:57:24,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 13:57:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:24,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1663429417, now seen corresponding path program 1 times [2022-11-23 13:57:24,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:24,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363664563] [2022-11-23 13:57:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:24,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:57:24,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:57:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:57:24,446 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 13:57:24,446 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:57:24,446 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-23 13:57:24,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-23 13:57:24,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-23 13:57:24,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-23 13:57:24,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-23 13:57:24,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-23 13:57:24,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-23 13:57:24,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-23 13:57:24,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-23 13:57:24,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-23 13:57:24,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 13:57:24,449 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-23 13:57:24,449 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 13:57:24,449 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-23 13:57:24,474 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-23 13:57:24,477 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 13:57:24,477 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 178 transitions, 506 flow [2022-11-23 13:57:24,477 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 178 transitions, 506 flow [2022-11-23 13:57:24,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 506 flow [2022-11-23 13:57:33,216 INFO L130 PetriNetUnfolder]: 11372/43900 cut-off events. [2022-11-23 13:57:33,216 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2022-11-23 13:57:33,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54326 conditions, 43900 events. 11372/43900 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 511238 event pairs, 4296 based on Foata normal form. 0/35528 useless extension candidates. Maximal degree in co-relation 26480. Up to 5120 conditions per place. [2022-11-23 13:57:34,116 INFO L119 LiptonReduction]: Number of co-enabled transitions 12610 [2022-11-23 13:57:37,145 INFO L134 LiptonReduction]: Checked pairs total: 23922 [2022-11-23 13:57:37,145 INFO L136 LiptonReduction]: Total number of compositions: 141 [2022-11-23 13:57:37,146 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 67 transitions, 284 flow