./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- 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-2329fc7 [2022-12-13 16:39:09,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:39:09,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:39:09,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:39:09,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:39:09,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:39:10,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:39:10,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:39:10,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:39:10,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:39:10,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:39:10,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:39:10,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:39:10,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:39:10,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:39:10,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:39:10,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:39:10,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:39:10,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:39:10,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:39:10,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:39:10,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:39:10,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:39:10,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:39:10,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:39:10,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:39:10,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:39:10,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:39:10,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:39:10,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:39:10,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:39:10,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:39:10,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:39:10,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:39:10,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:39:10,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:39:10,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:39:10,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:39:10,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:39:10,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:39:10,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:39:10,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 16:39:10,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:39:10,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:39:10,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:39:10,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:39:10,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:39:10,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:39:10,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:39:10,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:39:10,043 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:39:10,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:39:10,044 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:39:10,044 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:39:10,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:39:10,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:39:10,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:39:10,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:39:10,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:39:10,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:39:10,050 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 16:39:10,050 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:39:10,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:39:10,050 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:39:10,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:39:10,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:39:10,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:39:10,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:39:10,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:39:10,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:39:10,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:39:10,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:39:10,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:39:10,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:39:10,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:39:10,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:39:10,052 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:39:10,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:39:10,053 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:39:10,053 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2022-12-13 16:39:10,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:39:10,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:39:10,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:39:10,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:39:10,260 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:39:10,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-12-13 16:39:12,827 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:39:13,060 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:39:13,061 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-12-13 16:39:13,074 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/data/a6cc6115c/ac0e0722fb4f41688310172491f4ae27/FLAGc082bf088 [2022-12-13 16:39:13,398 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/data/a6cc6115c/ac0e0722fb4f41688310172491f4ae27 [2022-12-13 16:39:13,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:39:13,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:39:13,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:39:13,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:39:13,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:39:13,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:13,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791996d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13, skipping insertion in model container [2022-12-13 16:39:13,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:13,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:39:13,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:39:13,810 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_9239b0ab-9a70-420b-9438-471105a2500e/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-12-13 16:39:13,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:39:13,905 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:39:13,931 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_9239b0ab-9a70-420b-9438-471105a2500e/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-12-13 16:39:13,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:39:13,991 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:39:13,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13 WrapperNode [2022-12-13 16:39:13,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:39:13,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:39:13,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:39:13,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:39:13,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,029 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 241 [2022-12-13 16:39:14,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:39:14,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:39:14,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:39:14,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:39:14,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:39:14,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:39:14,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:39:14,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:39:14,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (1/1) ... [2022-12-13 16:39:14,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:39:14,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:39:14,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:39:14,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:39:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:39:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 16:39:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 16:39:14,115 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 16:39:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:39:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:39:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 16:39:14,115 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 16:39:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:39:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 16:39:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:39:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:39:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 16:39:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:39:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:39:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:39:14,117 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:39:14,240 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:39:14,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:39:14,555 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:39:14,564 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:39:14,564 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 16:39:14,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:39:14 BoogieIcfgContainer [2022-12-13 16:39:14,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:39:14,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:39:14,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:39:14,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:39:14,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:39:13" (1/3) ... [2022-12-13 16:39:14,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cded38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:39:14, skipping insertion in model container [2022-12-13 16:39:14,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:39:13" (2/3) ... [2022-12-13 16:39:14,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cded38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:39:14, skipping insertion in model container [2022-12-13 16:39:14,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:39:14" (3/3) ... [2022-12-13 16:39:14,575 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2022-12-13 16:39:14,583 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:39:14,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:39:14,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 16:39:14,594 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:39:14,674 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 16:39:14,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 268 transitions, 558 flow [2022-12-13 16:39:14,805 INFO L130 PetriNetUnfolder]: 54/500 cut-off events. [2022-12-13 16:39:14,805 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-12-13 16:39:14,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 500 events. 54/500 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2058 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2022-12-13 16:39:14,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 268 transitions, 558 flow [2022-12-13 16:39:14,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 268 transitions, 558 flow [2022-12-13 16:39:14,821 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:39:14,828 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 268 transitions, 558 flow [2022-12-13 16:39:14,830 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 268 transitions, 558 flow [2022-12-13 16:39:14,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 268 transitions, 558 flow [2022-12-13 16:39:14,881 INFO L130 PetriNetUnfolder]: 54/500 cut-off events. [2022-12-13 16:39:14,881 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-12-13 16:39:14,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 500 events. 54/500 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2058 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2022-12-13 16:39:14,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 22184 [2022-12-13 16:39:21,955 INFO L134 LiptonReduction]: Checked pairs total: 37063 [2022-12-13 16:39:21,956 INFO L136 LiptonReduction]: Total number of compositions: 234 [2022-12-13 16:39:21,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:39:21,970 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1041ac45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:39:21,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-12-13 16:39:21,972 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-12-13 16:39:21,972 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:39:21,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:39:21,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:39:21,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-13 16:39:21,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:39:21,977 INFO L85 PathProgramCache]: Analyzing trace with hash 33407, now seen corresponding path program 1 times [2022-12-13 16:39:21,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:39:21,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752603580] [2022-12-13 16:39:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:21,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:39:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:39:22,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:39:22,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752603580] [2022-12-13 16:39:22,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752603580] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:39:22,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:39:22,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:39:22,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287066287] [2022-12-13 16:39:22,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:39:22,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:39:22,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:39:22,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:39:22,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:39:22,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 502 [2022-12-13 16:39:22,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 82 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2022-12-13 16:39:22,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:39:22,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 502 [2022-12-13 16:39:22,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:39:23,141 INFO L130 PetriNetUnfolder]: 4605/7822 cut-off events. [2022-12-13 16:39:23,141 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-12-13 16:39:23,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15151 conditions, 7822 events. 4605/7822 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 48104 event pairs, 4306 based on Foata normal form. 464/6280 useless extension candidates. Maximal degree in co-relation 13407. Up to 7229 conditions per place. [2022-12-13 16:39:23,183 INFO L137 encePairwiseOnDemand]: 488/502 looper letters, 59 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2022-12-13 16:39:23,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 280 flow [2022-12-13 16:39:23,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:39:23,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:39:23,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-12-13 16:39:23,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5265604249667994 [2022-12-13 16:39:23,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-12-13 16:39:23,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-12-13 16:39:23,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:39:23,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-12-13 16:39:23,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 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) [2022-12-13 16:39:23,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 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) [2022-12-13 16:39:23,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 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) [2022-12-13 16:39:23,221 INFO L175 Difference]: Start difference. First operand has 69 places, 82 transitions, 186 flow. Second operand 3 states and 793 transitions. [2022-12-13 16:39:23,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 280 flow [2022-12-13 16:39:23,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:39:23,232 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 162 flow [2022-12-13 16:39:23,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2022-12-13 16:39:23,238 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2022-12-13 16:39:23,238 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 162 flow [2022-12-13 16:39:23,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2022-12-13 16:39:23,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:39:23,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:39:23,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:39:23,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-13 16:39:23,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:39:23,240 INFO L85 PathProgramCache]: Analyzing trace with hash 994830049, now seen corresponding path program 1 times [2022-12-13 16:39:23,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:39:23,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067969002] [2022-12-13 16:39:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:23,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:39:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:39:23,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:39:23,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067969002] [2022-12-13 16:39:23,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067969002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:39:23,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:39:23,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:39:23,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675711802] [2022-12-13 16:39:23,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:39:23,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:39:23,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:39:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:39:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:39:23,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 502 [2022-12-13 16:39:23,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2022-12-13 16:39:23,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:39:23,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 502 [2022-12-13 16:39:23,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:39:24,052 INFO L130 PetriNetUnfolder]: 4605/7823 cut-off events. [2022-12-13 16:39:24,052 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-12-13 16:39:24,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15155 conditions, 7823 events. 4605/7823 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 48105 event pairs, 4306 based on Foata normal form. 0/5817 useless extension candidates. Maximal degree in co-relation 15147. Up to 7230 conditions per place. [2022-12-13 16:39:24,082 INFO L137 encePairwiseOnDemand]: 499/502 looper letters, 59 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-13 16:39:24,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 286 flow [2022-12-13 16:39:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:39:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:39:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2022-12-13 16:39:24,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5192563081009296 [2022-12-13 16:39:24,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2022-12-13 16:39:24,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2022-12-13 16:39:24,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:39:24,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2022-12-13 16:39:24,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 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) [2022-12-13 16:39:24,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 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) [2022-12-13 16:39:24,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 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) [2022-12-13 16:39:24,103 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 162 flow. Second operand 3 states and 782 transitions. [2022-12-13 16:39:24,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 286 flow [2022-12-13 16:39:24,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:39:24,105 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 173 flow [2022-12-13 16:39:24,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2022-12-13 16:39:24,106 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2022-12-13 16:39:24,106 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 173 flow [2022-12-13 16:39:24,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2022-12-13 16:39:24,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:39:24,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:39:24,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:39:24,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-13 16:39:24,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:39:24,108 INFO L85 PathProgramCache]: Analyzing trace with hash 816122058, now seen corresponding path program 1 times [2022-12-13 16:39:24,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:39:24,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439272665] [2022-12-13 16:39:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:24,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:39:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:39:24,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:39:24,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439272665] [2022-12-13 16:39:24,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439272665] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:39:24,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167957005] [2022-12-13 16:39:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:24,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:39:24,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:39:24,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:39:24,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:39:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:24,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:39:24,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:39:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:39:24,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:39:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:39:24,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167957005] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:39:24,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:39:24,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:39:24,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806234829] [2022-12-13 16:39:24,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:39:24,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:39:24,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:39:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:39:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:39:24,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 502 [2022-12-13 16:39:24,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 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) [2022-12-13 16:39:24,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:39:24,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 502 [2022-12-13 16:39:24,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:39:25,027 INFO L130 PetriNetUnfolder]: 4605/7826 cut-off events. [2022-12-13 16:39:25,027 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-12-13 16:39:25,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15170 conditions, 7826 events. 4605/7826 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 48126 event pairs, 4306 based on Foata normal form. 0/5820 useless extension candidates. Maximal degree in co-relation 15160. Up to 7230 conditions per place. [2022-12-13 16:39:25,064 INFO L137 encePairwiseOnDemand]: 499/502 looper letters, 59 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2022-12-13 16:39:25,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 313 flow [2022-12-13 16:39:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:39:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:39:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1501 transitions. [2022-12-13 16:39:25,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49833997343957503 [2022-12-13 16:39:25,073 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1501 transitions. [2022-12-13 16:39:25,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1501 transitions. [2022-12-13 16:39:25,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:39:25,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1501 transitions. [2022-12-13 16:39:25,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.16666666666666) internal successors, (1501), 6 states have internal predecessors, (1501), 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) [2022-12-13 16:39:25,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 502.0) internal successors, (3514), 7 states have internal predecessors, (3514), 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) [2022-12-13 16:39:25,081 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 502.0) internal successors, (3514), 7 states have internal predecessors, (3514), 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) [2022-12-13 16:39:25,082 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 173 flow. Second operand 6 states and 1501 transitions. [2022-12-13 16:39:25,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 313 flow [2022-12-13 16:39:25,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 309 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 16:39:25,086 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 205 flow [2022-12-13 16:39:25,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2022-12-13 16:39:25,087 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2022-12-13 16:39:25,087 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 205 flow [2022-12-13 16:39:25,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 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) [2022-12-13 16:39:25,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:39:25,088 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-12-13 16:39:25,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:39:25,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:39:25,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-13 16:39:25,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:39:25,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1501141281, now seen corresponding path program 2 times [2022-12-13 16:39:25,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:39:25,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426796942] [2022-12-13 16:39:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:25,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:39:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:39:25,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:39:25,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426796942] [2022-12-13 16:39:25,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426796942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:39:25,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:39:25,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:39:25,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395913378] [2022-12-13 16:39:25,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:39:25,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:39:25,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:39:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:39:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:39:25,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 502 [2022-12-13 16:39:25,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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) [2022-12-13 16:39:25,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:39:25,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 502 [2022-12-13 16:39:25,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:39:26,118 INFO L130 PetriNetUnfolder]: 4472/7473 cut-off events. [2022-12-13 16:39:26,118 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-12-13 16:39:26,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14589 conditions, 7473 events. 4472/7473 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 45351 event pairs, 2142 based on Foata normal form. 0/5604 useless extension candidates. Maximal degree in co-relation 14575. Up to 6965 conditions per place. [2022-12-13 16:39:26,137 INFO L137 encePairwiseOnDemand]: 497/502 looper letters, 69 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2022-12-13 16:39:26,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 361 flow [2022-12-13 16:39:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:39:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:39:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-12-13 16:39:26,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5245683930942895 [2022-12-13 16:39:26,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-12-13 16:39:26,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-12-13 16:39:26,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:39:26,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-12-13 16:39:26,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 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) [2022-12-13 16:39:26,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 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) [2022-12-13 16:39:26,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 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) [2022-12-13 16:39:26,145 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 205 flow. Second operand 3 states and 790 transitions. [2022-12-13 16:39:26,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 361 flow [2022-12-13 16:39:26,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 347 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 16:39:26,147 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 195 flow [2022-12-13 16:39:26,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2022-12-13 16:39:26,148 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2022-12-13 16:39:26,148 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 195 flow [2022-12-13 16:39:26,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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) [2022-12-13 16:39:26,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:39:26,149 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-13 16:39:26,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:39:26,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-13 16:39:26,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:39:26,149 INFO L85 PathProgramCache]: Analyzing trace with hash -512164870, now seen corresponding path program 1 times [2022-12-13 16:39:26,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:39:26,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701502285] [2022-12-13 16:39:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:26,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:39:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:39:26,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:39:26,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701502285] [2022-12-13 16:39:26,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701502285] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:39:26,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078377304] [2022-12-13 16:39:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:26,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:39:26,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:39:26,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:39:26,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:39:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:26,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:39:26,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:39:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:39:26,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:39:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:39:26,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078377304] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:39:26,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:39:26,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 16:39:26,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20735203] [2022-12-13 16:39:26,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:39:26,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 16:39:26,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:39:26,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 16:39:26,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:39:26,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 502 [2022-12-13 16:39:26,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 195 flow. Second operand has 13 states, 13 states have (on average 240.30769230769232) internal successors, (3124), 13 states have internal predecessors, (3124), 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) [2022-12-13 16:39:26,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:39:26,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 502 [2022-12-13 16:39:26,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:39:27,349 INFO L130 PetriNetUnfolder]: 4472/7509 cut-off events. [2022-12-13 16:39:27,349 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2022-12-13 16:39:27,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14653 conditions, 7509 events. 4472/7509 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 45404 event pairs, 4206 based on Foata normal form. 6/5644 useless extension candidates. Maximal degree in co-relation 14638. Up to 6972 conditions per place. [2022-12-13 16:39:27,374 INFO L137 encePairwiseOnDemand]: 499/502 looper letters, 57 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2022-12-13 16:39:27,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 77 transitions, 367 flow [2022-12-13 16:39:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:39:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 16:39:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2942 transitions. [2022-12-13 16:39:27,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48837981407702524 [2022-12-13 16:39:27,379 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2942 transitions. [2022-12-13 16:39:27,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2942 transitions. [2022-12-13 16:39:27,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:39:27,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2942 transitions. [2022-12-13 16:39:27,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 245.16666666666666) internal successors, (2942), 12 states have internal predecessors, (2942), 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) [2022-12-13 16:39:27,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 502.0) internal successors, (6526), 13 states have internal predecessors, (6526), 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) [2022-12-13 16:39:27,395 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 502.0) internal successors, (6526), 13 states have internal predecessors, (6526), 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) [2022-12-13 16:39:27,395 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 195 flow. Second operand 12 states and 2942 transitions. [2022-12-13 16:39:27,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 77 transitions, 367 flow [2022-12-13 16:39:27,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 77 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:39:27,397 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 275 flow [2022-12-13 16:39:27,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=275, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2022-12-13 16:39:27,398 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 24 predicate places. [2022-12-13 16:39:27,398 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 275 flow [2022-12-13 16:39:27,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.30769230769232) internal successors, (3124), 13 states have internal predecessors, (3124), 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) [2022-12-13 16:39:27,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:39:27,399 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-12-13 16:39:27,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:39:27,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:39:27,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-13 16:39:27,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:39:27,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1643795290, now seen corresponding path program 2 times [2022-12-13 16:39:27,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:39:27,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122336206] [2022-12-13 16:39:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:27,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:39:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:39:27,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:39:27,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122336206] [2022-12-13 16:39:27,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122336206] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:39:27,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067630571] [2022-12-13 16:39:27,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:39:27,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:39:27,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:39:27,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:39:27,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:39:28,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:39:28,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:39:28,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 16:39:28,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:39:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:39:28,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:39:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:39:28,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067630571] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:39:28,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:39:28,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-12-13 16:39:28,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399760606] [2022-12-13 16:39:28,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:39:28,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 16:39:28,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:39:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 16:39:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-12-13 16:39:28,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 502 [2022-12-13 16:39:28,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 275 flow. Second operand has 24 states, 24 states have (on average 240.125) internal successors, (5763), 24 states have internal predecessors, (5763), 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) [2022-12-13 16:39:28,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:39:28,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 502 [2022-12-13 16:39:28,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:39:29,380 INFO L130 PetriNetUnfolder]: 4472/7521 cut-off events. [2022-12-13 16:39:29,380 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2022-12-13 16:39:29,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14733 conditions, 7521 events. 4472/7521 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 45414 event pairs, 4206 based on Foata normal form. 12/5662 useless extension candidates. Maximal degree in co-relation 14711. Up to 6972 conditions per place. [2022-12-13 16:39:29,402 INFO L137 encePairwiseOnDemand]: 499/502 looper letters, 57 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2022-12-13 16:39:29,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 89 transitions, 531 flow [2022-12-13 16:39:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 16:39:29,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 16:39:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5828 transitions. [2022-12-13 16:39:29,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48373173970783534 [2022-12-13 16:39:29,410 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5828 transitions. [2022-12-13 16:39:29,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5828 transitions. [2022-12-13 16:39:29,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:39:29,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5828 transitions. [2022-12-13 16:39:29,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 242.83333333333334) internal successors, (5828), 24 states have internal predecessors, (5828), 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) [2022-12-13 16:39:29,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 502.0) internal successors, (12550), 25 states have internal predecessors, (12550), 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) [2022-12-13 16:39:29,430 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 502.0) internal successors, (12550), 25 states have internal predecessors, (12550), 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) [2022-12-13 16:39:29,430 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 275 flow. Second operand 24 states and 5828 transitions. [2022-12-13 16:39:29,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 89 transitions, 531 flow [2022-12-13 16:39:29,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 89 transitions, 459 flow, removed 31 selfloop flow, removed 5 redundant places. [2022-12-13 16:39:29,433 INFO L231 Difference]: Finished difference. Result has 123 places, 89 transitions, 395 flow [2022-12-13 16:39:29,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=395, PETRI_PLACES=123, PETRI_TRANSITIONS=89} [2022-12-13 16:39:29,434 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 54 predicate places. [2022-12-13 16:39:29,434 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 89 transitions, 395 flow [2022-12-13 16:39:29,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 240.125) internal successors, (5763), 24 states have internal predecessors, (5763), 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) [2022-12-13 16:39:29,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:39:29,435 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2022-12-13 16:39:29,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 16:39:29,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:39:29,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-12-13 16:39:29,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:39:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1852970470, now seen corresponding path program 3 times [2022-12-13 16:39:29,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:39:29,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532659996] [2022-12-13 16:39:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:29,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:39:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:39:30,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:39:30,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532659996] [2022-12-13 16:39:30,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532659996] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:39:30,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712463387] [2022-12-13 16:39:30,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:39:30,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:39:30,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:39:30,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:39:30,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9239b0ab-9a70-420b-9438-471105a2500e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process