./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.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_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/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_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/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_5bd96dbf-b695-4bc2-a224-23127e2e9230/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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- 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 18:30:21,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:30:21,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:30:21,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:30:21,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:30:21,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:30:21,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:30:21,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:30:21,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:30:21,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:30:21,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:30:21,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:30:21,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:30:21,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:30:21,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:30:21,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:30:21,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:30:21,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:30:21,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:30:21,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:30:21,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:30:21,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:30:21,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:30:21,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:30:21,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:30:21,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:30:21,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:30:21,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:30:21,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:30:21,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:30:21,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:30:21,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:30:21,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:30:21,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:30:21,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:30:21,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:30:21,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:30:21,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:30:21,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:30:21,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:30:21,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:30:21,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 18:30:21,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:30:21,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:30:21,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:30:21,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:30:21,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:30:21,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:30:21,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:30:21,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:30:21,385 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:30:21,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:30:21,386 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:30:21,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:30:21,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:30:21,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:30:21,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:30:21,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:30:21,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:30:21,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:30:21,386 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 18:30:21,387 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:30:21,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:30:21,387 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:30:21,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:30:21,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:30:21,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:30:21,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:30:21,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:30:21,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:30:21,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:30:21,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:30:21,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:30:21,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:30:21,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:30:21,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:30:21,388 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:30:21,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:30:21,389 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:30:21,389 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_5bd96dbf-b695-4bc2-a224-23127e2e9230/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2022-12-13 18:30:21,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:30:21,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:30:21,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:30:21,577 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:30:21,577 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:30:21,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-12-13 18:30:24,109 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:30:24,302 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:30:24,302 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-12-13 18:30:24,312 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/data/43610a87b/91267fef2fcc41c1887c79cdf349cc50/FLAG17af0fb56 [2022-12-13 18:30:24,704 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/data/43610a87b/91267fef2fcc41c1887c79cdf349cc50 [2022-12-13 18:30:24,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:30:24,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:30:24,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:30:24,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:30:24,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:30:24,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:30:24" (1/1) ... [2022-12-13 18:30:24,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b7435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:24, skipping insertion in model container [2022-12-13 18:30:24,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:30:24" (1/1) ... [2022-12-13 18:30:24,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:30:24,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:30:25,067 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_5bd96dbf-b695-4bc2-a224-23127e2e9230/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-12-13 18:30:25,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:30:25,091 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:30:25,119 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_5bd96dbf-b695-4bc2-a224-23127e2e9230/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-12-13 18:30:25,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:30:25,160 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:30:25,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25 WrapperNode [2022-12-13 18:30:25,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:30:25,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:30:25,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:30:25,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:30:25,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,194 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2022-12-13 18:30:25,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:30:25,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:30:25,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:30:25,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:30:25,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:30:25,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:30:25,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:30:25,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:30:25,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (1/1) ... [2022-12-13 18:30:25,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:30:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:25,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:30:25,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:30:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:30:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:30:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:30:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:30:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 18:30:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:30:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 18:30:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 18:30:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:30:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:30:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:30:25,269 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 18:30:25,398 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:30:25,400 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:30:25,591 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:30:25,598 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:30:25,599 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 18:30:25,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:30:25 BoogieIcfgContainer [2022-12-13 18:30:25,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:30:25,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:30:25,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:30:25,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:30:25,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:30:24" (1/3) ... [2022-12-13 18:30:25,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdc0b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:30:25, skipping insertion in model container [2022-12-13 18:30:25,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:30:25" (2/3) ... [2022-12-13 18:30:25,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdc0b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:30:25, skipping insertion in model container [2022-12-13 18:30:25,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:30:25" (3/3) ... [2022-12-13 18:30:25,610 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2022-12-13 18:30:25,618 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:30:25,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:30:25,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 18:30:25,627 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:30:25,670 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 18:30:25,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 145 transitions, 298 flow [2022-12-13 18:30:25,755 INFO L130 PetriNetUnfolder]: 23/193 cut-off events. [2022-12-13 18:30:25,755 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:30:25,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 193 events. 23/193 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 463 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2022-12-13 18:30:25,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 145 transitions, 298 flow [2022-12-13 18:30:25,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 142 transitions, 292 flow [2022-12-13 18:30:25,771 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:30:25,780 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 142 transitions, 292 flow [2022-12-13 18:30:25,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 142 transitions, 292 flow [2022-12-13 18:30:25,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 142 transitions, 292 flow [2022-12-13 18:30:25,813 INFO L130 PetriNetUnfolder]: 22/190 cut-off events. [2022-12-13 18:30:25,814 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:30:25,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 190 events. 22/190 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 460 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2022-12-13 18:30:25,818 INFO L119 LiptonReduction]: Number of co-enabled transitions 4176 [2022-12-13 18:30:28,657 INFO L134 LiptonReduction]: Checked pairs total: 7056 [2022-12-13 18:30:28,657 INFO L136 LiptonReduction]: Total number of compositions: 137 [2022-12-13 18:30:28,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:30:28,672 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;@5442b854, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:30:28,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 18:30:28,674 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-12-13 18:30:28,674 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:30:28,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:28,675 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:30:28,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-12-13 18:30:28,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:28,679 INFO L85 PathProgramCache]: Analyzing trace with hash 17885, now seen corresponding path program 1 times [2022-12-13 18:30:28,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:28,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455977968] [2022-12-13 18:30:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:28,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:28,830 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 18:30:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:28,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455977968] [2022-12-13 18:30:28,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455977968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:28,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:28,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:30:28,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805314979] [2022-12-13 18:30:28,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:28,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:28,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:28,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:30:28,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 282 [2022-12-13 18:30:28,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 18:30:28,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:28,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 282 [2022-12-13 18:30:28,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:28,967 INFO L130 PetriNetUnfolder]: 170/372 cut-off events. [2022-12-13 18:30:28,967 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:30:28,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 372 events. 170/372 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1770 event pairs, 156 based on Foata normal form. 14/244 useless extension candidates. Maximal degree in co-relation 701. Up to 366 conditions per place. [2022-12-13 18:30:28,970 INFO L137 encePairwiseOnDemand]: 272/282 looper letters, 30 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-12-13 18:30:28,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 136 flow [2022-12-13 18:30:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:30:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2022-12-13 18:30:28,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2022-12-13 18:30:28,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2022-12-13 18:30:28,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2022-12-13 18:30:28,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:28,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2022-12-13 18:30:28,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 18:30:28,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 18:30:28,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 18:30:28,990 INFO L175 Difference]: Start difference. First operand has 36 places, 42 transitions, 92 flow. Second operand 3 states and 412 transitions. [2022-12-13 18:30:28,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 136 flow [2022-12-13 18:30:28,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:30:28,993 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 76 flow [2022-12-13 18:30:28,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2022-12-13 18:30:28,997 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-12-13 18:30:28,997 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 76 flow [2022-12-13 18:30:28,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 18:30:28,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:28,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:30:28,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:30:28,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-12-13 18:30:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash 17887, now seen corresponding path program 1 times [2022-12-13 18:30:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:28,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068999803] [2022-12-13 18:30:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,043 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 18:30:29,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:29,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068999803] [2022-12-13 18:30:29,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068999803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:29,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:29,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:30:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537611138] [2022-12-13 18:30:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:29,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:29,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:29,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:29,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:30:29,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 282 [2022-12-13 18:30:29,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 18:30:29,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:29,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 282 [2022-12-13 18:30:29,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:29,134 INFO L130 PetriNetUnfolder]: 145/309 cut-off events. [2022-12-13 18:30:29,134 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:30:29,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 309 events. 145/309 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1294 event pairs, 110 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 618. Up to 292 conditions per place. [2022-12-13 18:30:29,135 INFO L137 encePairwiseOnDemand]: 275/282 looper letters, 40 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-13 18:30:29,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 182 flow [2022-12-13 18:30:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:30:29,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2022-12-13 18:30:29,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2022-12-13 18:30:29,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2022-12-13 18:30:29,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2022-12-13 18:30:29,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:29,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2022-12-13 18:30:29,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 18:30:29,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 18:30:29,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 18:30:29,142 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 76 flow. Second operand 3 states and 428 transitions. [2022-12-13 18:30:29,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 182 flow [2022-12-13 18:30:29,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:30:29,143 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 83 flow [2022-12-13 18:30:29,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2022-12-13 18:30:29,144 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-12-13 18:30:29,144 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 83 flow [2022-12-13 18:30:29,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 18:30:29,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:29,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:30:29,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:30:29,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-12-13 18:30:29,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash 532012607, now seen corresponding path program 1 times [2022-12-13 18:30:29,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:29,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616497445] [2022-12-13 18:30:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,219 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 18:30:29,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:29,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616497445] [2022-12-13 18:30:29,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616497445] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:29,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238841257] [2022-12-13 18:30:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:29,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:29,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:29,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:29,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:30:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:30:29,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:29,314 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 18:30:29,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:30:29,330 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 18:30:29,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238841257] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:30:29,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:30:29,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 18:30:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175369600] [2022-12-13 18:30:29,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:30:29,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:30:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:30:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:30:29,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 282 [2022-12-13 18:30:29,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 83 flow. Second operand has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 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 18:30:29,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:29,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 282 [2022-12-13 18:30:29,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:29,404 INFO L130 PetriNetUnfolder]: 24/79 cut-off events. [2022-12-13 18:30:29,404 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 18:30:29,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 79 events. 24/79 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 272 event pairs, 0 based on Foata normal form. 13/80 useless extension candidates. Maximal degree in co-relation 183. Up to 50 conditions per place. [2022-12-13 18:30:29,406 INFO L137 encePairwiseOnDemand]: 277/282 looper letters, 27 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2022-12-13 18:30:29,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 132 flow [2022-12-13 18:30:29,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:30:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:30:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 536 transitions. [2022-12-13 18:30:29,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2022-12-13 18:30:29,407 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 536 transitions. [2022-12-13 18:30:29,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 536 transitions. [2022-12-13 18:30:29,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:29,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 536 transitions. [2022-12-13 18:30:29,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 18:30:29,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 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 18:30:29,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 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 18:30:29,410 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 83 flow. Second operand 4 states and 536 transitions. [2022-12-13 18:30:29,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 132 flow [2022-12-13 18:30:29,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 18:30:29,411 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 46 flow [2022-12-13 18:30:29,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2022-12-13 18:30:29,412 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -11 predicate places. [2022-12-13 18:30:29,412 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 46 flow [2022-12-13 18:30:29,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 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 18:30:29,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:29,413 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:30:29,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:30:29,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:29,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-12-13 18:30:29,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:29,614 INFO L85 PathProgramCache]: Analyzing trace with hash -687513871, now seen corresponding path program 1 times [2022-12-13 18:30:29,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:29,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394223558] [2022-12-13 18:30:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:29,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,658 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 18:30:29,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:29,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394223558] [2022-12-13 18:30:29,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394223558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:29,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:29,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:30:29,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427450324] [2022-12-13 18:30:29,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:29,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:30:29,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 282 [2022-12-13 18:30:29,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 18:30:29,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:29,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 282 [2022-12-13 18:30:29,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:29,698 INFO L130 PetriNetUnfolder]: 20/59 cut-off events. [2022-12-13 18:30:29,698 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 18:30:29,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 59 events. 20/59 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 128 event pairs, 4 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 128. Up to 41 conditions per place. [2022-12-13 18:30:29,699 INFO L137 encePairwiseOnDemand]: 278/282 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2022-12-13 18:30:29,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 18 transitions, 80 flow [2022-12-13 18:30:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:30:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2022-12-13 18:30:29,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2022-12-13 18:30:29,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2022-12-13 18:30:29,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2022-12-13 18:30:29,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:29,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2022-12-13 18:30:29,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 18:30:29,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 18:30:29,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 18:30:29,703 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 46 flow. Second operand 3 states and 402 transitions. [2022-12-13 18:30:29,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 18 transitions, 80 flow [2022-12-13 18:30:29,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:30:29,703 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 43 flow [2022-12-13 18:30:29,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=43, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2022-12-13 18:30:29,704 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -13 predicate places. [2022-12-13 18:30:29,704 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 43 flow [2022-12-13 18:30:29,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 18:30:29,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:29,704 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 18:30:29,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:30:29,705 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-12-13 18:30:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash -687479279, now seen corresponding path program 1 times [2022-12-13 18:30:29,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:29,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621319565] [2022-12-13 18:30:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:29,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:30:29,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:30:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:30:29,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:30:29,741 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:30:29,742 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-13 18:30:29,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2022-12-13 18:30:29,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2022-12-13 18:30:29,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2022-12-13 18:30:29,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2022-12-13 18:30:29,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2022-12-13 18:30:29,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2022-12-13 18:30:29,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2022-12-13 18:30:29,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2022-12-13 18:30:29,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2022-12-13 18:30:29,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2022-12-13 18:30:29,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2022-12-13 18:30:29,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2022-12-13 18:30:29,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2022-12-13 18:30:29,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2022-12-13 18:30:29,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:30:29,745 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 18:30:29,747 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:30:29,747 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 18:30:29,763 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 18:30:29,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 183 transitions, 384 flow [2022-12-13 18:30:29,786 INFO L130 PetriNetUnfolder]: 40/316 cut-off events. [2022-12-13 18:30:29,787 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:30:29,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 316 events. 40/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 963 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2022-12-13 18:30:29,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 183 transitions, 384 flow [2022-12-13 18:30:29,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 183 transitions, 384 flow [2022-12-13 18:30:29,789 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:30:29,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 183 transitions, 384 flow [2022-12-13 18:30:29,790 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 183 transitions, 384 flow [2022-12-13 18:30:29,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 183 transitions, 384 flow [2022-12-13 18:30:29,810 INFO L130 PetriNetUnfolder]: 40/316 cut-off events. [2022-12-13 18:30:29,810 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:30:29,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 316 events. 40/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 963 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2022-12-13 18:30:29,816 INFO L119 LiptonReduction]: Number of co-enabled transitions 12312 [2022-12-13 18:30:32,476 INFO L134 LiptonReduction]: Checked pairs total: 31716 [2022-12-13 18:30:32,476 INFO L136 LiptonReduction]: Total number of compositions: 155 [2022-12-13 18:30:32,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:30:32,479 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;@5442b854, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:30:32,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 18:30:32,480 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 18:30:32,480 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:30:32,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:32,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:30:32,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 18:30:32,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash 29918, now seen corresponding path program 1 times [2022-12-13 18:30:32,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:32,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045925143] [2022-12-13 18:30:32,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:32,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:32,500 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 18:30:32,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:32,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045925143] [2022-12-13 18:30:32,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045925143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:32,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:32,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:30:32,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823249541] [2022-12-13 18:30:32,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:32,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:32,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:32,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:30:32,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 338 [2022-12-13 18:30:32,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 70 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 18:30:32,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:32,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 338 [2022-12-13 18:30:32,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:33,174 INFO L130 PetriNetUnfolder]: 6640/10626 cut-off events. [2022-12-13 18:30:33,174 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-12-13 18:30:33,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21092 conditions, 10626 events. 6640/10626 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 67687 event pairs, 3024 based on Foata normal form. 472/7466 useless extension candidates. Maximal degree in co-relation 2263. Up to 10337 conditions per place. [2022-12-13 18:30:33,213 INFO L137 encePairwiseOnDemand]: 316/338 looper letters, 65 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2022-12-13 18:30:33,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 296 flow [2022-12-13 18:30:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:30:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-12-13 18:30:33,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5562130177514792 [2022-12-13 18:30:33,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2022-12-13 18:30:33,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2022-12-13 18:30:33,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:33,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2022-12-13 18:30:33,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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 18:30:33,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:30:33,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:30:33,218 INFO L175 Difference]: Start difference. First operand has 58 places, 70 transitions, 158 flow. Second operand 3 states and 564 transitions. [2022-12-13 18:30:33,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 296 flow [2022-12-13 18:30:33,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:30:33,219 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 152 flow [2022-12-13 18:30:33,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2022-12-13 18:30:33,220 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2022-12-13 18:30:33,220 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 152 flow [2022-12-13 18:30:33,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 18:30:33,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:33,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:30:33,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:30:33,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 18:30:33,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1851555703, now seen corresponding path program 1 times [2022-12-13 18:30:33,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:33,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190786245] [2022-12-13 18:30:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:33,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:30:33,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:33,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190786245] [2022-12-13 18:30:33,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190786245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:33,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:33,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:30:33,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837192430] [2022-12-13 18:30:33,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:33,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:33,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:33,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:33,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:30:33,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 338 [2022-12-13 18:30:33,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 18:30:33,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:33,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 338 [2022-12-13 18:30:33,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:33,933 INFO L130 PetriNetUnfolder]: 6206/9780 cut-off events. [2022-12-13 18:30:33,933 INFO L131 PetriNetUnfolder]: For 566/566 co-relation queries the response was YES. [2022-12-13 18:30:33,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20976 conditions, 9780 events. 6206/9780 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 59695 event pairs, 5950 based on Foata normal form. 0/6739 useless extension candidates. Maximal degree in co-relation 20871. Up to 9679 conditions per place. [2022-12-13 18:30:33,976 INFO L137 encePairwiseOnDemand]: 336/338 looper letters, 50 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2022-12-13 18:30:33,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 250 flow [2022-12-13 18:30:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:30:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2022-12-13 18:30:33,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5059171597633136 [2022-12-13 18:30:33,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2022-12-13 18:30:33,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2022-12-13 18:30:33,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:33,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2022-12-13 18:30:33,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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 18:30:33,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:30:33,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:30:33,980 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 152 flow. Second operand 3 states and 513 transitions. [2022-12-13 18:30:33,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 250 flow [2022-12-13 18:30:33,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:30:33,982 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 148 flow [2022-12-13 18:30:33,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2022-12-13 18:30:33,983 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2022-12-13 18:30:33,983 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 148 flow [2022-12-13 18:30:33,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 18:30:33,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:33,983 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:30:33,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:30:33,983 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 18:30:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1851555704, now seen corresponding path program 1 times [2022-12-13 18:30:33,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:33,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041874572] [2022-12-13 18:30:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:34,012 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 18:30:34,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:34,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041874572] [2022-12-13 18:30:34,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041874572] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:34,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035429944] [2022-12-13 18:30:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:34,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:34,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:34,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:34,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:30:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:34,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:30:34,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:34,082 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 18:30:34,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:30:34,095 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 18:30:34,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035429944] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:30:34,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:30:34,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 18:30:34,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782340636] [2022-12-13 18:30:34,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:30:34,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:30:34,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:34,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:30:34,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:30:34,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 338 [2022-12-13 18:30:34,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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 18:30:34,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:34,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 338 [2022-12-13 18:30:34,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:34,318 INFO L130 PetriNetUnfolder]: 1498/2702 cut-off events. [2022-12-13 18:30:34,318 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2022-12-13 18:30:34,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6117 conditions, 2702 events. 1498/2702 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16231 event pairs, 0 based on Foata normal form. 240/2224 useless extension candidates. Maximal degree in co-relation 6107. Up to 1290 conditions per place. [2022-12-13 18:30:34,325 INFO L137 encePairwiseOnDemand]: 331/338 looper letters, 103 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2022-12-13 18:30:34,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 111 transitions, 458 flow [2022-12-13 18:30:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:30:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:30:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1050 transitions. [2022-12-13 18:30:34,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5177514792899408 [2022-12-13 18:30:34,327 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1050 transitions. [2022-12-13 18:30:34,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1050 transitions. [2022-12-13 18:30:34,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:34,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1050 transitions. [2022-12-13 18:30:34,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 18:30:34,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 338.0) internal successors, (2366), 7 states have internal predecessors, (2366), 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 18:30:34,331 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 338.0) internal successors, (2366), 7 states have internal predecessors, (2366), 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 18:30:34,331 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 148 flow. Second operand 6 states and 1050 transitions. [2022-12-13 18:30:34,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 111 transitions, 458 flow [2022-12-13 18:30:34,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 111 transitions, 455 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 18:30:34,334 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 105 flow [2022-12-13 18:30:34,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=105, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2022-12-13 18:30:34,335 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2022-12-13 18:30:34,335 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 105 flow [2022-12-13 18:30:34,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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 18:30:34,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:34,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:30:34,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:30:34,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:34,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 18:30:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:34,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1571194401, now seen corresponding path program 1 times [2022-12-13 18:30:34,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:34,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848951167] [2022-12-13 18:30:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:34,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:34,651 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 18:30:34,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:34,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848951167] [2022-12-13 18:30:34,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848951167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:34,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:34,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:30:34,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98348099] [2022-12-13 18:30:34,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:34,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:34,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:34,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:30:34,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 338 [2022-12-13 18:30:34,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 18:30:34,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:34,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 338 [2022-12-13 18:30:34,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:34,832 INFO L130 PetriNetUnfolder]: 1352/2239 cut-off events. [2022-12-13 18:30:34,832 INFO L131 PetriNetUnfolder]: For 691/691 co-relation queries the response was YES. [2022-12-13 18:30:34,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5351 conditions, 2239 events. 1352/2239 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12247 event pairs, 506 based on Foata normal form. 0/1643 useless extension candidates. Maximal degree in co-relation 5340. Up to 2046 conditions per place. [2022-12-13 18:30:34,841 INFO L137 encePairwiseOnDemand]: 331/338 looper letters, 45 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2022-12-13 18:30:34,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 244 flow [2022-12-13 18:30:34,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:30:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2022-12-13 18:30:34,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5108481262327417 [2022-12-13 18:30:34,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2022-12-13 18:30:34,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2022-12-13 18:30:34,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:34,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2022-12-13 18:30:34,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 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 18:30:34,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:30:34,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:30:34,846 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 105 flow. Second operand 3 states and 518 transitions. [2022-12-13 18:30:34,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 244 flow [2022-12-13 18:30:34,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 229 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 18:30:34,848 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 121 flow [2022-12-13 18:30:34,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2022-12-13 18:30:34,849 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2022-12-13 18:30:34,849 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 121 flow [2022-12-13 18:30:34,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 18:30:34,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:34,850 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:30:34,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:30:34,850 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 18:30:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash -569309109, now seen corresponding path program 1 times [2022-12-13 18:30:34,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:34,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775774171] [2022-12-13 18:30:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:34,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:30:34,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:34,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775774171] [2022-12-13 18:30:34,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775774171] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:34,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448166687] [2022-12-13 18:30:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:34,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:34,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:34,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:34,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:30:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:34,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:30:34,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:30:34,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:30:34,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448166687] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:34,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:30:34,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 18:30:34,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171066181] [2022-12-13 18:30:34,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:34,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:30:34,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:34,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:30:34,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:30:34,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 338 [2022-12-13 18:30:34,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 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 18:30:34,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:34,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 338 [2022-12-13 18:30:34,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:35,133 INFO L130 PetriNetUnfolder]: 972/1695 cut-off events. [2022-12-13 18:30:35,133 INFO L131 PetriNetUnfolder]: For 293/293 co-relation queries the response was YES. [2022-12-13 18:30:35,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3820 conditions, 1695 events. 972/1695 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8890 event pairs, 432 based on Foata normal form. 0/1454 useless extension candidates. Maximal degree in co-relation 3809. Up to 1613 conditions per place. [2022-12-13 18:30:35,139 INFO L137 encePairwiseOnDemand]: 335/338 looper letters, 47 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2022-12-13 18:30:35,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 244 flow [2022-12-13 18:30:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:30:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:30:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 676 transitions. [2022-12-13 18:30:35,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 18:30:35,141 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 676 transitions. [2022-12-13 18:30:35,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 676 transitions. [2022-12-13 18:30:35,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:35,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 676 transitions. [2022-12-13 18:30:35,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:35,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 18:30:35,144 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 18:30:35,144 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 121 flow. Second operand 4 states and 676 transitions. [2022-12-13 18:30:35,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 244 flow [2022-12-13 18:30:35,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:30:35,146 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 118 flow [2022-12-13 18:30:35,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2022-12-13 18:30:35,147 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2022-12-13 18:30:35,147 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 118 flow [2022-12-13 18:30:35,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 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 18:30:35,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:35,147 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:30:35,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:30:35,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 18:30:35,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 18:30:35,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:35,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2053541567, now seen corresponding path program 1 times [2022-12-13 18:30:35,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:35,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444170000] [2022-12-13 18:30:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:35,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:35,406 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 18:30:35,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:35,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444170000] [2022-12-13 18:30:35,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444170000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:35,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:35,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:30:35,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378852299] [2022-12-13 18:30:35,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:35,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:30:35,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:30:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:30:35,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 338 [2022-12-13 18:30:35,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 18:30:35,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:35,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 338 [2022-12-13 18:30:35,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:35,710 INFO L130 PetriNetUnfolder]: 1196/2051 cut-off events. [2022-12-13 18:30:35,710 INFO L131 PetriNetUnfolder]: For 441/441 co-relation queries the response was YES. [2022-12-13 18:30:35,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 2051 events. 1196/2051 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11443 event pairs, 193 based on Foata normal form. 0/1804 useless extension candidates. Maximal degree in co-relation 4601. Up to 1096 conditions per place. [2022-12-13 18:30:35,716 INFO L137 encePairwiseOnDemand]: 323/338 looper letters, 93 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2022-12-13 18:30:35,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 116 transitions, 558 flow [2022-12-13 18:30:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:30:35,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:30:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1177 transitions. [2022-12-13 18:30:35,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4974640743871513 [2022-12-13 18:30:35,718 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1177 transitions. [2022-12-13 18:30:35,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1177 transitions. [2022-12-13 18:30:35,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:35,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1177 transitions. [2022-12-13 18:30:35,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 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 18:30:35,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 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 18:30:35,722 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 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 18:30:35,722 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 118 flow. Second operand 7 states and 1177 transitions. [2022-12-13 18:30:35,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 116 transitions, 558 flow [2022-12-13 18:30:35,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 116 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:30:35,724 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 274 flow [2022-12-13 18:30:35,724 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2022-12-13 18:30:35,724 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2022-12-13 18:30:35,725 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 274 flow [2022-12-13 18:30:35,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 18:30:35,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:35,725 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 18:30:35,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:30:35,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 18:30:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:35,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1645137219, now seen corresponding path program 1 times [2022-12-13 18:30:35,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:35,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087964908] [2022-12-13 18:30:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:35,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:30:35,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:30:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:30:35,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:30:35,743 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:30:35,743 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-13 18:30:35,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-12-13 18:30:35,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-12-13 18:30:35,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-12-13 18:30:35,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-12-13 18:30:35,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-12-13 18:30:35,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-12-13 18:30:35,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-12-13 18:30:35,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-12-13 18:30:35,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-12-13 18:30:35,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-12-13 18:30:35,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-12-13 18:30:35,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-12-13 18:30:35,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-12-13 18:30:35,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-12-13 18:30:35,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-12-13 18:30:35,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-12-13 18:30:35,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-12-13 18:30:35,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-12-13 18:30:35,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:30:35,746 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:30:35,746 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:30:35,746 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 18:30:35,762 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 18:30:35,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 221 transitions, 472 flow [2022-12-13 18:30:35,799 INFO L130 PetriNetUnfolder]: 62/480 cut-off events. [2022-12-13 18:30:35,799 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 18:30:35,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 480 events. 62/480 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1663 event pairs, 1 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 324. Up to 16 conditions per place. [2022-12-13 18:30:35,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 221 transitions, 472 flow [2022-12-13 18:30:35,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 221 transitions, 472 flow [2022-12-13 18:30:35,803 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:30:35,804 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 221 transitions, 472 flow [2022-12-13 18:30:35,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 221 transitions, 472 flow [2022-12-13 18:30:35,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 221 transitions, 472 flow [2022-12-13 18:30:35,838 INFO L130 PetriNetUnfolder]: 62/480 cut-off events. [2022-12-13 18:30:35,838 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 18:30:35,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 480 events. 62/480 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1663 event pairs, 1 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 324. Up to 16 conditions per place. [2022-12-13 18:30:35,850 INFO L119 LiptonReduction]: Number of co-enabled transitions 22680 [2022-12-13 18:30:38,302 INFO L134 LiptonReduction]: Checked pairs total: 56064 [2022-12-13 18:30:38,302 INFO L136 LiptonReduction]: Total number of compositions: 180 [2022-12-13 18:30:38,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:30:38,303 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;@5442b854, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:30:38,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 18:30:38,304 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 18:30:38,304 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:30:38,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:38,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:30:38,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 18:30:38,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash 43966, now seen corresponding path program 1 times [2022-12-13 18:30:38,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:38,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805655522] [2022-12-13 18:30:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:38,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:38,318 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 18:30:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:38,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805655522] [2022-12-13 18:30:38,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805655522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:38,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:38,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:30:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319912435] [2022-12-13 18:30:38,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:38,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:38,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:38,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:38,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:30:38,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 401 [2022-12-13 18:30:38,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 93 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 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 18:30:38,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:38,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 401 [2022-12-13 18:30:38,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:46,995 INFO L130 PetriNetUnfolder]: 116032/165317 cut-off events. [2022-12-13 18:30:46,996 INFO L131 PetriNetUnfolder]: For 2606/2606 co-relation queries the response was YES. [2022-12-13 18:30:47,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326881 conditions, 165317 events. 116032/165317 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 5799. Compared 1313280 event pairs, 73403 based on Foata normal form. 19057/126496 useless extension candidates. Maximal degree in co-relation 17455. Up to 159728 conditions per place. [2022-12-13 18:30:47,591 INFO L137 encePairwiseOnDemand]: 373/401 looper letters, 77 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-12-13 18:30:47,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 366 flow [2022-12-13 18:30:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:30:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2022-12-13 18:30:47,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5586034912718204 [2022-12-13 18:30:47,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2022-12-13 18:30:47,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2022-12-13 18:30:47,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:47,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2022-12-13 18:30:47,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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 18:30:47,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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 18:30:47,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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 18:30:47,597 INFO L175 Difference]: Start difference. First operand has 76 places, 93 transitions, 216 flow. Second operand 3 states and 672 transitions. [2022-12-13 18:30:47,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 366 flow [2022-12-13 18:30:47,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:30:47,600 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 198 flow [2022-12-13 18:30:47,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2022-12-13 18:30:47,601 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-12-13 18:30:47,601 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 198 flow [2022-12-13 18:30:47,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 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 18:30:47,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:47,601 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:30:47,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:30:47,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 18:30:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1958467318, now seen corresponding path program 1 times [2022-12-13 18:30:47,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:47,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293625442] [2022-12-13 18:30:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:47,632 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 18:30:47,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:47,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293625442] [2022-12-13 18:30:47,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293625442] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:47,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163380452] [2022-12-13 18:30:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:47,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:47,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:47,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:47,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:30:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:47,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:30:47,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:30:47,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:30:47,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163380452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:47,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:30:47,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [2] total 3 [2022-12-13 18:30:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837692850] [2022-12-13 18:30:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:47,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:47,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:47,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:30:47,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 401 [2022-12-13 18:30:47,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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 18:30:47,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:47,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 401 [2022-12-13 18:30:47,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:56,714 INFO L130 PetriNetUnfolder]: 108683/153689 cut-off events. [2022-12-13 18:30:56,715 INFO L131 PetriNetUnfolder]: For 7781/7781 co-relation queries the response was YES. [2022-12-13 18:30:56,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321305 conditions, 153689 events. 108683/153689 cut-off events. For 7781/7781 co-relation queries the response was YES. Maximal size of possible extension queue 5379. Compared 1199282 event pairs, 105744 based on Foata normal form. 0/103459 useless extension candidates. Maximal degree in co-relation 321199. Up to 149680 conditions per place. [2022-12-13 18:30:57,332 INFO L137 encePairwiseOnDemand]: 399/401 looper letters, 62 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2022-12-13 18:30:57,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 320 flow [2022-12-13 18:30:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:30:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2022-12-13 18:30:57,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5112219451371571 [2022-12-13 18:30:57,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2022-12-13 18:30:57,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2022-12-13 18:30:57,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:57,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2022-12-13 18:30:57,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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 18:30:57,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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 18:30:57,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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 18:30:57,338 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 198 flow. Second operand 3 states and 615 transitions. [2022-12-13 18:30:57,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 320 flow [2022-12-13 18:30:57,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:30:57,357 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 194 flow [2022-12-13 18:30:57,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2022-12-13 18:30:57,358 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-12-13 18:30:57,358 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 194 flow [2022-12-13 18:30:57,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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 18:30:57,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:57,358 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:30:57,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:30:57,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 18:30:57,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 18:30:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:57,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1958467319, now seen corresponding path program 1 times [2022-12-13 18:30:57,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:57,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543397208] [2022-12-13 18:30:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:57,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:57,604 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 18:30:57,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:57,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543397208] [2022-12-13 18:30:57,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543397208] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:57,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658875510] [2022-12-13 18:30:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:57,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:57,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:57,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:57,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:30:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:57,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:30:57,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:57,680 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 18:30:57,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:30:57,693 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 18:30:57,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658875510] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:30:57,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:30:57,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 18:30:57,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785017827] [2022-12-13 18:30:57,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:30:57,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:30:57,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:57,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:30:57,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:30:57,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 401 [2022-12-13 18:30:57,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 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 18:30:57,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:57,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 401 [2022-12-13 18:30:57,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:59,950 INFO L130 PetriNetUnfolder]: 26863/39407 cut-off events. [2022-12-13 18:30:59,950 INFO L131 PetriNetUnfolder]: For 8130/8130 co-relation queries the response was YES. [2022-12-13 18:30:59,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86008 conditions, 39407 events. 26863/39407 cut-off events. For 8130/8130 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 287745 event pairs, 3960 based on Foata normal form. 2715/30050 useless extension candidates. Maximal degree in co-relation 85997. Up to 19044 conditions per place. [2022-12-13 18:31:00,093 INFO L137 encePairwiseOnDemand]: 394/401 looper letters, 160 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2022-12-13 18:31:00,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 175 transitions, 717 flow [2022-12-13 18:31:00,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:31:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:31:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1479 transitions. [2022-12-13 18:31:00,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5268970431065194 [2022-12-13 18:31:00,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1479 transitions. [2022-12-13 18:31:00,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1479 transitions. [2022-12-13 18:31:00,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:00,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1479 transitions. [2022-12-13 18:31:00,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 211.28571428571428) internal successors, (1479), 7 states have internal predecessors, (1479), 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 18:31:00,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 401.0) internal successors, (3208), 8 states have internal predecessors, (3208), 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 18:31:00,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 401.0) internal successors, (3208), 8 states have internal predecessors, (3208), 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 18:31:00,101 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 194 flow. Second operand 7 states and 1479 transitions. [2022-12-13 18:31:00,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 175 transitions, 717 flow [2022-12-13 18:31:00,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 175 transitions, 710 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 18:31:00,106 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 154 flow [2022-12-13 18:31:00,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2022-12-13 18:31:00,107 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2022-12-13 18:31:00,107 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 154 flow [2022-12-13 18:31:00,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 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 18:31:00,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:00,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:00,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:31:00,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd96dbf-b695-4bc2-a224-23127e2e9230/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 18:31:00,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 18:31:00,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash 592308803, now seen corresponding path program 1 times [2022-12-13 18:31:00,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:00,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038191877] [2022-12-13 18:31:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:00,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:00,355 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 18:31:00,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:00,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038191877] [2022-12-13 18:31:00,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038191877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:00,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:00,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:31:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177483990] [2022-12-13 18:31:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:00,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:31:00,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:00,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:31:00,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:00,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 401 [2022-12-13 18:31:00,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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 18:31:00,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:00,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 401 [2022-12-13 18:31:00,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:02,594 INFO L130 PetriNetUnfolder]: 27769/39453 cut-off events. [2022-12-13 18:31:02,595 INFO L131 PetriNetUnfolder]: For 8980/8980 co-relation queries the response was YES. [2022-12-13 18:31:02,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90227 conditions, 39453 events. 27769/39453 cut-off events. For 8980/8980 co-relation queries the response was YES. Maximal size of possible extension queue 1773. Compared 274064 event pairs, 13654 based on Foata normal form. 0/27529 useless extension candidates. Maximal degree in co-relation 90215. Up to 38435 conditions per place. [2022-12-13 18:31:02,757 INFO L137 encePairwiseOnDemand]: 391/401 looper letters, 63 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-12-13 18:31:02,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 354 flow [2022-12-13 18:31:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:31:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:31:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2022-12-13 18:31:02,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.514546965918537 [2022-12-13 18:31:02,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2022-12-13 18:31:02,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2022-12-13 18:31:02,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:02,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2022-12-13 18:31:02,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 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 18:31:02,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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 18:31:02,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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 18:31:02,762 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 154 flow. Second operand 3 states and 619 transitions. [2022-12-13 18:31:02,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 354 flow [2022-12-13 18:31:02,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 331 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-13 18:31:02,769 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 177 flow [2022-12-13 18:31:02,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2022-12-13 18:31:02,770 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2022-12-13 18:31:02,770 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 177 flow [2022-12-13 18:31:02,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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 18:31:02,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:02,770 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:31:02,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 18:31:02,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 18:31:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1864433771, now seen corresponding path program 1 times [2022-12-13 18:31:02,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:02,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300916769] [2022-12-13 18:31:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:02,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:31:02,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:02,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300916769] [2022-12-13 18:31:02,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300916769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:02,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:02,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:31:02,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717850047] [2022-12-13 18:31:02,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:02,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:31:02,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:02,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:31:02,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:02,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 401 [2022-12-13 18:31:02,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 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 18:31:02,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:02,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 401 [2022-12-13 18:31:02,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:04,322 INFO L130 PetriNetUnfolder]: 19843/28930 cut-off events. [2022-12-13 18:31:04,323 INFO L131 PetriNetUnfolder]: For 5425/5513 co-relation queries the response was YES. [2022-12-13 18:31:04,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64840 conditions, 28930 events. 19843/28930 cut-off events. For 5425/5513 co-relation queries the response was YES. Maximal size of possible extension queue 1257. Compared 202232 event pairs, 18985 based on Foata normal form. 0/23320 useless extension candidates. Maximal degree in co-relation 64828. Up to 28107 conditions per place. [2022-12-13 18:31:04,444 INFO L137 encePairwiseOnDemand]: 399/401 looper letters, 47 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2022-12-13 18:31:04,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 58 transitions, 265 flow [2022-12-13 18:31:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:31:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:31:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2022-12-13 18:31:04,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5037406483790524 [2022-12-13 18:31:04,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2022-12-13 18:31:04,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2022-12-13 18:31:04,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:04,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2022-12-13 18:31:04,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 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 18:31:04,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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 18:31:04,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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 18:31:04,450 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 177 flow. Second operand 3 states and 606 transitions. [2022-12-13 18:31:04,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 58 transitions, 265 flow [2022-12-13 18:31:04,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 58 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:31:04,459 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 167 flow [2022-12-13 18:31:04,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2022-12-13 18:31:04,460 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -7 predicate places. [2022-12-13 18:31:04,460 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 167 flow [2022-12-13 18:31:04,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 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 18:31:04,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:04,460 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:04,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 18:31:04,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 18:31:04,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:04,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1760342739, now seen corresponding path program 1 times [2022-12-13 18:31:04,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:04,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114453422] [2022-12-13 18:31:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:04,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:04,511 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 18:31:04,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:04,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114453422] [2022-12-13 18:31:04,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114453422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:04,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:04,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:04,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640378561] [2022-12-13 18:31:04,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:04,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:04,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:04,543 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 401 [2022-12-13 18:31:04,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 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 18:31:04,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:04,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 401 [2022-12-13 18:31:04,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:06,796 INFO L130 PetriNetUnfolder]: 28862/42218 cut-off events. [2022-12-13 18:31:06,796 INFO L131 PetriNetUnfolder]: For 8698/8838 co-relation queries the response was YES. [2022-12-13 18:31:06,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95074 conditions, 42218 events. 28862/42218 cut-off events. For 8698/8838 co-relation queries the response was YES. Maximal size of possible extension queue 1990. Compared 307329 event pairs, 6628 based on Foata normal form. 30/35992 useless extension candidates. Maximal degree in co-relation 95061. Up to 23949 conditions per place. [2022-12-13 18:31:06,979 INFO L137 encePairwiseOnDemand]: 380/401 looper letters, 144 selfloop transitions, 30 changer transitions 0/182 dead transitions. [2022-12-13 18:31:06,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 182 transitions, 876 flow [2022-12-13 18:31:06,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:31:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:31:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1433 transitions. [2022-12-13 18:31:06,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5105094406840043 [2022-12-13 18:31:06,982 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1433 transitions. [2022-12-13 18:31:06,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1433 transitions. [2022-12-13 18:31:06,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:06,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1433 transitions. [2022-12-13 18:31:06,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.71428571428572) internal successors, (1433), 7 states have internal predecessors, (1433), 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 18:31:06,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 401.0) internal successors, (3208), 8 states have internal predecessors, (3208), 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 18:31:06,988 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 401.0) internal successors, (3208), 8 states have internal predecessors, (3208), 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 18:31:06,988 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 167 flow. Second operand 7 states and 1433 transitions. [2022-12-13 18:31:06,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 182 transitions, 876 flow [2022-12-13 18:31:06,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 182 transitions, 875 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:31:06,994 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 428 flow [2022-12-13 18:31:06,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2022-12-13 18:31:06,995 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-12-13 18:31:06,995 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 428 flow [2022-12-13 18:31:06,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 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 18:31:06,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:06,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:06,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 18:31:06,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 18:31:06,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1760342670, now seen corresponding path program 1 times [2022-12-13 18:31:06,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:06,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78594045] [2022-12-13 18:31:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:06,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:07,033 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 18:31:07,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:07,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78594045] [2022-12-13 18:31:07,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78594045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:07,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:07,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422167032] [2022-12-13 18:31:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:07,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:07,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 401 [2022-12-13 18:31:07,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 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 18:31:07,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:07,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 401 [2022-12-13 18:31:07,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:10,159 INFO L130 PetriNetUnfolder]: 29978/44927 cut-off events. [2022-12-13 18:31:10,160 INFO L131 PetriNetUnfolder]: For 43306/43913 co-relation queries the response was YES. [2022-12-13 18:31:10,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129620 conditions, 44927 events. 29978/44927 cut-off events. For 43306/43913 co-relation queries the response was YES. Maximal size of possible extension queue 2143. Compared 344426 event pairs, 6097 based on Foata normal form. 2025/46909 useless extension candidates. Maximal degree in co-relation 129601. Up to 27612 conditions per place. [2022-12-13 18:31:10,442 INFO L137 encePairwiseOnDemand]: 380/401 looper letters, 164 selfloop transitions, 42 changer transitions 0/214 dead transitions. [2022-12-13 18:31:10,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 214 transitions, 1397 flow [2022-12-13 18:31:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:31:10,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:31:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1433 transitions. [2022-12-13 18:31:10,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5105094406840043 [2022-12-13 18:31:10,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1433 transitions. [2022-12-13 18:31:10,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1433 transitions. [2022-12-13 18:31:10,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:10,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1433 transitions. [2022-12-13 18:31:10,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.71428571428572) internal successors, (1433), 7 states have internal predecessors, (1433), 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 18:31:10,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 401.0) internal successors, (3208), 8 states have internal predecessors, (3208), 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 18:31:10,450 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 401.0) internal successors, (3208), 8 states have internal predecessors, (3208), 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 18:31:10,450 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 428 flow. Second operand 7 states and 1433 transitions. [2022-12-13 18:31:10,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 214 transitions, 1397 flow [2022-12-13 18:31:10,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 214 transitions, 1391 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:31:10,529 INFO L231 Difference]: Finished difference. Result has 88 places, 117 transitions, 904 flow [2022-12-13 18:31:10,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=904, PETRI_PLACES=88, PETRI_TRANSITIONS=117} [2022-12-13 18:31:10,529 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2022-12-13 18:31:10,529 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 117 transitions, 904 flow [2022-12-13 18:31:10,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 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 18:31:10,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:10,530 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 18:31:10,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 18:31:10,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 18:31:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:10,530 INFO L85 PathProgramCache]: Analyzing trace with hash 854372991, now seen corresponding path program 1 times [2022-12-13 18:31:10,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:10,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8408626] [2022-12-13 18:31:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:10,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:31:10,538 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:31:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:31:10,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:31:10,546 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:31:10,546 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-12-13 18:31:10,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-12-13 18:31:10,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-12-13 18:31:10,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-12-13 18:31:10,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-12-13 18:31:10,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-12-13 18:31:10,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-12-13 18:31:10,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-12-13 18:31:10,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-12-13 18:31:10,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-12-13 18:31:10,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 18:31:10,548 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:10,548 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:31:10,549 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 18:31:10,566 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 18:31:10,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 259 transitions, 562 flow [2022-12-13 18:31:10,642 INFO L130 PetriNetUnfolder]: 96/728 cut-off events. [2022-12-13 18:31:10,642 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 18:31:10,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 728 events. 96/728 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2885 event pairs, 6 based on Foata normal form. 0/568 useless extension candidates. Maximal degree in co-relation 500. Up to 32 conditions per place. [2022-12-13 18:31:10,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 259 transitions, 562 flow [2022-12-13 18:31:10,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 259 transitions, 562 flow [2022-12-13 18:31:10,655 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:31:10,655 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 259 transitions, 562 flow [2022-12-13 18:31:10,655 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 259 transitions, 562 flow [2022-12-13 18:31:10,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 259 transitions, 562 flow [2022-12-13 18:31:10,723 INFO L130 PetriNetUnfolder]: 96/728 cut-off events. [2022-12-13 18:31:10,723 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 18:31:10,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 728 events. 96/728 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2885 event pairs, 6 based on Foata normal form. 0/568 useless extension candidates. Maximal degree in co-relation 500. Up to 32 conditions per place. [2022-12-13 18:31:10,742 INFO L119 LiptonReduction]: Number of co-enabled transitions 35856 [2022-12-13 18:31:13,530 INFO L134 LiptonReduction]: Checked pairs total: 95788 [2022-12-13 18:31:13,530 INFO L136 LiptonReduction]: Total number of compositions: 208 [2022-12-13 18:31:13,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:31:13,532 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;@5442b854, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:31:13,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-12-13 18:31:13,533 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 18:31:13,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:31:13,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:13,533 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:31:13,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-12-13 18:31:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:13,534 INFO L85 PathProgramCache]: Analyzing trace with hash 60127, now seen corresponding path program 1 times [2022-12-13 18:31:13,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:13,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27014760] [2022-12-13 18:31:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:13,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:13,550 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 18:31:13,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:13,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27014760] [2022-12-13 18:31:13,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27014760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:13,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:13,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:31:13,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875550055] [2022-12-13 18:31:13,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:13,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:31:13,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:13,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:31:13,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:13,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 467 [2022-12-13 18:31:13,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 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 18:31:13,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:13,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 467 [2022-12-13 18:31:13,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand