./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --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_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/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_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/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_5dc10076-fbf9-49a4-bd99-518090c65b17/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 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- 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 20:01:37,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:01:37,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:01:37,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:01:37,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:01:37,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:01:37,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:01:37,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:01:37,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:01:37,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:01:37,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:01:37,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:01:37,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:01:37,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:01:37,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:01:37,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:01:37,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:01:37,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:01:37,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:01:37,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:01:37,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:01:37,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:01:37,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:01:37,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:01:37,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:01:37,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:01:37,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:01:37,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:01:37,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:01:37,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:01:37,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:01:37,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:01:37,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:01:37,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:01:37,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:01:37,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:01:37,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:01:37,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:01:37,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:01:37,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:01:37,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:01:37,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 20:01:37,963 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:01:37,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:01:37,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:01:37,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:01:37,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:01:37,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:01:37,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:01:37,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:01:37,965 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:01:37,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:01:37,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:01:37,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:01:37,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:01:37,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:01:37,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:01:37,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:01:37,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:01:37,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:01:37,967 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:01:37,967 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:01:37,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:01:37,967 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:01:37,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:01:37,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:01:37,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:01:37,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:01:37,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:01:37,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:01:37,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:01:37,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:01:37,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:01:37,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:01:37,969 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:01:37,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:01:37,969 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:01:37,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:01:37,969 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:01:37,970 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_5dc10076-fbf9-49a4-bd99-518090c65b17/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2022-12-13 20:01:38,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:01:38,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:01:38,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:01:38,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:01:38,187 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:01:38,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-12-13 20:01:40,715 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:01:40,875 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:01:40,875 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-12-13 20:01:40,880 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/data/410f107a2/84d18b0ef66340edbd8d525714522d36/FLAGd0611c0cf [2022-12-13 20:01:40,891 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/data/410f107a2/84d18b0ef66340edbd8d525714522d36 [2022-12-13 20:01:40,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:01:40,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:01:40,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:01:40,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:01:40,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:01:40,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:01:40" (1/1) ... [2022-12-13 20:01:40,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f065488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:40, skipping insertion in model container [2022-12-13 20:01:40,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:01:40" (1/1) ... [2022-12-13 20:01:40,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:01:40,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:01:41,063 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_5dc10076-fbf9-49a4-bd99-518090c65b17/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-12-13 20:01:41,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:01:41,074 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:01:41,091 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_5dc10076-fbf9-49a4-bd99-518090c65b17/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-12-13 20:01:41,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:01:41,113 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:01:41,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41 WrapperNode [2022-12-13 20:01:41,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:01:41,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:01:41,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:01:41,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:01:41,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,158 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 206 [2022-12-13 20:01:41,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:01:41,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:01:41,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:01:41,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:01:41,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:01:41,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:01:41,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:01:41,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:01:41,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (1/1) ... [2022-12-13 20:01:41,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:01:41,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:41,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:01:41,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:01:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:01:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 20:01:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:01:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:01:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:01:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 20:01:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 20:01:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 20:01:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 20:01:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 20:01:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:01:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 20:01:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:01:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:01:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:01:41,244 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 20:01:41,325 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:01:41,327 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:01:41,680 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:01:41,689 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:01:41,689 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 20:01:41,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:01:41 BoogieIcfgContainer [2022-12-13 20:01:41,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:01:41,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:01:41,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:01:41,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:01:41,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:01:40" (1/3) ... [2022-12-13 20:01:41,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7a407f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:01:41, skipping insertion in model container [2022-12-13 20:01:41,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:41" (2/3) ... [2022-12-13 20:01:41,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7a407f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:01:41, skipping insertion in model container [2022-12-13 20:01:41,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:01:41" (3/3) ... [2022-12-13 20:01:41,697 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2022-12-13 20:01:41,703 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:01:41,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:01:41,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-12-13 20:01:41,711 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:01:41,763 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:01:41,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 335 transitions, 686 flow [2022-12-13 20:01:41,856 INFO L130 PetriNetUnfolder]: 27/333 cut-off events. [2022-12-13 20:01:41,856 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:01:41,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 333 events. 27/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 458 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2022-12-13 20:01:41,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 335 transitions, 686 flow [2022-12-13 20:01:41,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 309 transitions, 630 flow [2022-12-13 20:01:41,867 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:01:41,875 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 309 transitions, 630 flow [2022-12-13 20:01:41,877 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 309 transitions, 630 flow [2022-12-13 20:01:41,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 309 transitions, 630 flow [2022-12-13 20:01:41,945 INFO L130 PetriNetUnfolder]: 26/309 cut-off events. [2022-12-13 20:01:41,945 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:01:41,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 309 events. 26/309 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 455 event pairs, 0 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2022-12-13 20:01:41,948 INFO L119 LiptonReduction]: Number of co-enabled transitions 1916 [2022-12-13 20:02:01,819 INFO L134 LiptonReduction]: Checked pairs total: 3958 [2022-12-13 20:02:01,819 INFO L136 LiptonReduction]: Total number of compositions: 367 [2022-12-13 20:02:01,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:02:01,840 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;@200462b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:02:01,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-12-13 20:02:01,841 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 20:02:01,841 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:02:01,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:01,842 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:02:01,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:01,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:01,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1235, now seen corresponding path program 1 times [2022-12-13 20:02:01,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:01,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339529829] [2022-12-13 20:02:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:01,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,939 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 20:02:01,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:01,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339529829] [2022-12-13 20:02:01,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339529829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:01,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:01,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:02:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858500212] [2022-12-13 20:02:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:01,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:02:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:01,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:02:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:02:01,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 702 [2022-12-13 20:02:01,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 311.5) internal successors, (623), 2 states have internal predecessors, (623), 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 20:02:01,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:01,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 702 [2022-12-13 20:02:01,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:02,145 INFO L130 PetriNetUnfolder]: 342/566 cut-off events. [2022-12-13 20:02:02,145 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 20:02:02,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 566 events. 342/566 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 2436 event pairs, 240 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 978. Up to 563 conditions per place. [2022-12-13 20:02:02,150 INFO L137 encePairwiseOnDemand]: 696/702 looper letters, 45 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2022-12-13 20:02:02,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 196 flow [2022-12-13 20:02:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:02:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:02:02,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 673 transitions. [2022-12-13 20:02:02,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4793447293447293 [2022-12-13 20:02:02,167 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 673 transitions. [2022-12-13 20:02:02,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 673 transitions. [2022-12-13 20:02:02,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:02,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 673 transitions. [2022-12-13 20:02:02,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 336.5) internal successors, (673), 2 states have internal predecessors, (673), 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 20:02:02,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 702.0) internal successors, (2106), 3 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:02,181 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 702.0) internal successors, (2106), 3 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:02,183 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 2 states and 673 transitions. [2022-12-13 20:02:02,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 196 flow [2022-12-13 20:02:02,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 20:02:02,187 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 98 flow [2022-12-13 20:02:02,189 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2022-12-13 20:02:02,191 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2022-12-13 20:02:02,191 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 98 flow [2022-12-13 20:02:02,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 311.5) internal successors, (623), 2 states have internal predecessors, (623), 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 20:02:02,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:02,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 20:02:02,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:02:02,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:02,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash 39624, now seen corresponding path program 1 times [2022-12-13 20:02:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:02,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482248665] [2022-12-13 20:02:02,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:02,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:02,206 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:02,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378444740] [2022-12-13 20:02:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:02,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:02,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:02,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:02,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:02:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:02,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:02,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:02,294 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 20:02:02,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:02,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:02,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482248665] [2022-12-13 20:02:02,294 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:02,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378444740] [2022-12-13 20:02:02,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378444740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:02,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:02,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:02:02,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579925159] [2022-12-13 20:02:02,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:02,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:02:02,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:02,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:02:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:02:02,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 702 [2022-12-13 20:02:02,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 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 20:02:02,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:02,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 702 [2022-12-13 20:02:02,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:02,558 INFO L130 PetriNetUnfolder]: 686/1128 cut-off events. [2022-12-13 20:02:02,558 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-12-13 20:02:02,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 1128 events. 686/1128 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 5742 event pairs, 480 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 2262. Up to 561 conditions per place. [2022-12-13 20:02:02,562 INFO L137 encePairwiseOnDemand]: 690/702 looper letters, 77 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2022-12-13 20:02:02,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 88 transitions, 356 flow [2022-12-13 20:02:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:02:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:02:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2022-12-13 20:02:02,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4724596391263058 [2022-12-13 20:02:02,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2022-12-13 20:02:02,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2022-12-13 20:02:02,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:02,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2022-12-13 20:02:02,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 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 20:02:02,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:02,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:02,574 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 98 flow. Second operand 3 states and 995 transitions. [2022-12-13 20:02:02,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 88 transitions, 356 flow [2022-12-13 20:02:02,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 88 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:02:02,575 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 172 flow [2022-12-13 20:02:02,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2022-12-13 20:02:02,576 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2022-12-13 20:02:02,576 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 172 flow [2022-12-13 20:02:02,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 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 20:02:02,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:02,577 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:02:02,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:02:02,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:02,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:02,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:02,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1229464, now seen corresponding path program 1 times [2022-12-13 20:02:02,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:02,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333076682] [2022-12-13 20:02:02,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:02,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:02,788 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:02,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011010532] [2022-12-13 20:02:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:02,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:02,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:02,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:02:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:02,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:02:02,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:02:02,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333076682] [2022-12-13 20:02:02,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011010532] [2022-12-13 20:02:02,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011010532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:02,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:02,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:02:02,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468250516] [2022-12-13 20:02:02,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:02,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:02:02,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:02:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:02:02,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 702 [2022-12-13 20:02:02,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 302.75) internal successors, (1211), 4 states have internal predecessors, (1211), 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 20:02:02,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:02,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 702 [2022-12-13 20:02:02,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:03,158 INFO L130 PetriNetUnfolder]: 683/1122 cut-off events. [2022-12-13 20:02:03,158 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 20:02:03,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 1122 events. 683/1122 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5667 event pairs, 480 based on Foata normal form. 4/577 useless extension candidates. Maximal degree in co-relation 2270. Up to 559 conditions per place. [2022-12-13 20:02:03,162 INFO L137 encePairwiseOnDemand]: 693/702 looper letters, 74 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2022-12-13 20:02:03,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 82 transitions, 372 flow [2022-12-13 20:02:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:02:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:02:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1294 transitions. [2022-12-13 20:02:03,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46082621082621084 [2022-12-13 20:02:03,168 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1294 transitions. [2022-12-13 20:02:03,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1294 transitions. [2022-12-13 20:02:03,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:03,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1294 transitions. [2022-12-13 20:02:03,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 323.5) internal successors, (1294), 4 states have internal predecessors, (1294), 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 20:02:03,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:02:03,175 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:02:03,175 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 172 flow. Second operand 4 states and 1294 transitions. [2022-12-13 20:02:03,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 82 transitions, 372 flow [2022-12-13 20:02:03,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 82 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:02:03,176 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 142 flow [2022-12-13 20:02:03,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2022-12-13 20:02:03,177 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2022-12-13 20:02:03,177 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 142 flow [2022-12-13 20:02:03,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 302.75) internal successors, (1211), 4 states have internal predecessors, (1211), 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 20:02:03,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:03,178 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:02:03,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:02:03,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:03,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:03,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:03,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1229466, now seen corresponding path program 1 times [2022-12-13 20:02:03,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:03,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91090362] [2022-12-13 20:02:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:03,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:03,387 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:03,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551148319] [2022-12-13 20:02:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:03,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:03,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:03,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:03,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:02:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:03,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:02:03,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:03,450 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 20:02:03,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:03,463 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 20:02:03,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:03,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91090362] [2022-12-13 20:02:03,464 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:03,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551148319] [2022-12-13 20:02:03,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551148319] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:03,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:02:03,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 20:02:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167478342] [2022-12-13 20:02:03,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:03,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:02:03,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:03,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:02:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:02:03,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 702 [2022-12-13 20:02:03,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 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 20:02:03,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:03,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 702 [2022-12-13 20:02:03,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:04,058 INFO L130 PetriNetUnfolder]: 1706/2799 cut-off events. [2022-12-13 20:02:04,059 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-12-13 20:02:04,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5659 conditions, 2799 events. 1706/2799 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 16416 event pairs, 1200 based on Foata normal form. 0/1440 useless extension candidates. Maximal degree in co-relation 5654. Up to 561 conditions per place. [2022-12-13 20:02:04,068 INFO L137 encePairwiseOnDemand]: 693/702 looper letters, 173 selfloop transitions, 21 changer transitions 0/196 dead transitions. [2022-12-13 20:02:04,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 196 transitions, 882 flow [2022-12-13 20:02:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:02:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:02:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2015 transitions. [2022-12-13 20:02:04,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2022-12-13 20:02:04,072 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2015 transitions. [2022-12-13 20:02:04,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2015 transitions. [2022-12-13 20:02:04,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:04,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2015 transitions. [2022-12-13 20:02:04,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 335.8333333333333) internal successors, (2015), 6 states have internal predecessors, (2015), 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 20:02:04,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 702.0) internal successors, (4914), 7 states have internal predecessors, (4914), 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 20:02:04,081 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 702.0) internal successors, (4914), 7 states have internal predecessors, (4914), 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 20:02:04,081 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 142 flow. Second operand 6 states and 2015 transitions. [2022-12-13 20:02:04,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 196 transitions, 882 flow [2022-12-13 20:02:04,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 196 transitions, 869 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:02:04,083 INFO L231 Difference]: Finished difference. Result has 52 places, 64 transitions, 291 flow [2022-12-13 20:02:04,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=52, PETRI_TRANSITIONS=64} [2022-12-13 20:02:04,084 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2022-12-13 20:02:04,084 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 64 transitions, 291 flow [2022-12-13 20:02:04,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 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 20:02:04,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:04,085 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:02:04,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:02:04,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:04,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:04,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1183185659, now seen corresponding path program 1 times [2022-12-13 20:02:04,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:04,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105293684] [2022-12-13 20:02:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:04,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:04,295 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:04,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951976648] [2022-12-13 20:02:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:04,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:04,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:04,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:04,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:02:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:04,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:04,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:04,372 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 20:02:04,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:04,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:04,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105293684] [2022-12-13 20:02:04,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:04,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951976648] [2022-12-13 20:02:04,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951976648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:04,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:04,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:02:04,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610666449] [2022-12-13 20:02:04,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:04,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:02:04,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:04,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:02:04,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:02:04,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 702 [2022-12-13 20:02:04,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 64 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 20:02:04,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:04,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 702 [2022-12-13 20:02:04,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:04,655 INFO L130 PetriNetUnfolder]: 1706/2794 cut-off events. [2022-12-13 20:02:04,655 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 20:02:04,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 2794 events. 1706/2794 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 16751 event pairs, 1200 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 5683. Up to 2756 conditions per place. [2022-12-13 20:02:04,664 INFO L137 encePairwiseOnDemand]: 700/702 looper letters, 60 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-12-13 20:02:04,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 411 flow [2022-12-13 20:02:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:02:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:02:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 966 transitions. [2022-12-13 20:02:04,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4586894586894587 [2022-12-13 20:02:04,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 966 transitions. [2022-12-13 20:02:04,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 966 transitions. [2022-12-13 20:02:04,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:04,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 966 transitions. [2022-12-13 20:02:04,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 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 20:02:04,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:04,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:04,670 INFO L175 Difference]: Start difference. First operand has 52 places, 64 transitions, 291 flow. Second operand 3 states and 966 transitions. [2022-12-13 20:02:04,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 411 flow [2022-12-13 20:02:04,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 381 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 20:02:04,672 INFO L231 Difference]: Finished difference. Result has 52 places, 63 transitions, 261 flow [2022-12-13 20:02:04,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=52, PETRI_TRANSITIONS=63} [2022-12-13 20:02:04,673 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2022-12-13 20:02:04,673 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 63 transitions, 261 flow [2022-12-13 20:02:04,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 20:02:04,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:04,674 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:02:04,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:02:04,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:04,874 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:04,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1183185658, now seen corresponding path program 1 times [2022-12-13 20:02:04,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:04,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429835866] [2022-12-13 20:02:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:04,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:04,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:04,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826510421] [2022-12-13 20:02:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:04,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:04,884 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:04,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:02:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:04,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:04,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:04,959 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 20:02:04,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:04,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:04,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429835866] [2022-12-13 20:02:04,960 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:04,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826510421] [2022-12-13 20:02:04,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826510421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:04,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:04,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:02:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688768179] [2022-12-13 20:02:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:04,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:02:04,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:02:04,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:02:04,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 702 [2022-12-13 20:02:04,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 63 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 20:02:04,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:04,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 702 [2022-12-13 20:02:04,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:05,532 INFO L130 PetriNetUnfolder]: 3401/5560 cut-off events. [2022-12-13 20:02:05,532 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2022-12-13 20:02:05,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11249 conditions, 5560 events. 3401/5560 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 36924 event pairs, 2400 based on Foata normal form. 0/2845 useless extension candidates. Maximal degree in co-relation 11240. Up to 2775 conditions per place. [2022-12-13 20:02:05,548 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 100 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2022-12-13 20:02:05,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 104 transitions, 600 flow [2022-12-13 20:02:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:02:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:02:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2022-12-13 20:02:05,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2022-12-13 20:02:05,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2022-12-13 20:02:05,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2022-12-13 20:02:05,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:05,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2022-12-13 20:02:05,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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 20:02:05,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:05,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:05,554 INFO L175 Difference]: Start difference. First operand has 52 places, 63 transitions, 261 flow. Second operand 3 states and 999 transitions. [2022-12-13 20:02:05,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 104 transitions, 600 flow [2022-12-13 20:02:05,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 104 transitions, 599 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:02:05,557 INFO L231 Difference]: Finished difference. Result has 54 places, 64 transitions, 272 flow [2022-12-13 20:02:05,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=54, PETRI_TRANSITIONS=64} [2022-12-13 20:02:05,557 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2022-12-13 20:02:05,557 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 64 transitions, 272 flow [2022-12-13 20:02:05,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 20:02:05,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:05,558 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 20:02:05,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:02:05,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:05,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:05,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2026569912, now seen corresponding path program 2 times [2022-12-13 20:02:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:05,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167274788] [2022-12-13 20:02:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:05,779 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:05,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841386195] [2022-12-13 20:02:05,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:02:05,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:05,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:05,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:05,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:02:05,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:02:05,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:02:05,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 20:02:05,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 20:02:06,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:06,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:06,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167274788] [2022-12-13 20:02:06,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:06,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841386195] [2022-12-13 20:02:06,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841386195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:06,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:06,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:02:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23524001] [2022-12-13 20:02:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:06,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:02:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:02:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:02:09,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:02:09,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 702 [2022-12-13 20:02:09,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 64 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 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 20:02:09,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:09,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 702 [2022-12-13 20:02:09,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:09,583 INFO L130 PetriNetUnfolder]: 3401/5559 cut-off events. [2022-12-13 20:02:09,583 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-12-13 20:02:09,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11269 conditions, 5559 events. 3401/5559 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 37047 event pairs, 2400 based on Foata normal form. 1/2815 useless extension candidates. Maximal degree in co-relation 11259. Up to 5514 conditions per place. [2022-12-13 20:02:09,607 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 55 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2022-12-13 20:02:09,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 384 flow [2022-12-13 20:02:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:02:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:02:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2022-12-13 20:02:09,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45251661918328584 [2022-12-13 20:02:09,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2022-12-13 20:02:09,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2022-12-13 20:02:09,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:09,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2022-12-13 20:02:09,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:09,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:09,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:09,616 INFO L175 Difference]: Start difference. First operand has 54 places, 64 transitions, 272 flow. Second operand 3 states and 953 transitions. [2022-12-13 20:02:09,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 384 flow [2022-12-13 20:02:09,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:02:09,617 INFO L231 Difference]: Finished difference. Result has 54 places, 63 transitions, 272 flow [2022-12-13 20:02:09,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=54, PETRI_TRANSITIONS=63} [2022-12-13 20:02:09,618 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2022-12-13 20:02:09,618 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 63 transitions, 272 flow [2022-12-13 20:02:09,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 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 20:02:09,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:09,618 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 20:02:09,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:02:09,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 20:02:09,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:09,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:09,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1124876165, now seen corresponding path program 1 times [2022-12-13 20:02:09,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:09,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409251217] [2022-12-13 20:02:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:09,851 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:09,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881084493] [2022-12-13 20:02:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:09,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:09,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:09,855 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:09,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:02:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:09,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:02:09,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:02:09,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:02:09,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:09,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409251217] [2022-12-13 20:02:09,967 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:09,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881084493] [2022-12-13 20:02:09,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881084493] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:09,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:02:09,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-12-13 20:02:09,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544806679] [2022-12-13 20:02:09,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:09,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:02:09,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:02:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:02:09,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 702 [2022-12-13 20:02:09,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 63 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 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 20:02:09,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:09,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 702 [2022-12-13 20:02:09,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:11,083 INFO L130 PetriNetUnfolder]: 8486/13857 cut-off events. [2022-12-13 20:02:11,083 INFO L131 PetriNetUnfolder]: For 362/362 co-relation queries the response was YES. [2022-12-13 20:02:11,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27995 conditions, 13857 events. 8486/13857 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 100533 event pairs, 6000 based on Foata normal form. 0/7122 useless extension candidates. Maximal degree in co-relation 27985. Up to 2774 conditions per place. [2022-12-13 20:02:11,132 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 219 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2022-12-13 20:02:11,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 226 transitions, 1264 flow [2022-12-13 20:02:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:02:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:02:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2023 transitions. [2022-12-13 20:02:11,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48029439696106363 [2022-12-13 20:02:11,136 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2023 transitions. [2022-12-13 20:02:11,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2023 transitions. [2022-12-13 20:02:11,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:11,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2023 transitions. [2022-12-13 20:02:11,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 337.1666666666667) internal successors, (2023), 6 states have internal predecessors, (2023), 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 20:02:11,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 702.0) internal successors, (4914), 7 states have internal predecessors, (4914), 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 20:02:11,144 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 702.0) internal successors, (4914), 7 states have internal predecessors, (4914), 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 20:02:11,144 INFO L175 Difference]: Start difference. First operand has 54 places, 63 transitions, 272 flow. Second operand 6 states and 2023 transitions. [2022-12-13 20:02:11,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 226 transitions, 1264 flow [2022-12-13 20:02:11,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 226 transitions, 1252 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:02:11,148 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 296 flow [2022-12-13 20:02:11,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2022-12-13 20:02:11,148 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2022-12-13 20:02:11,149 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 296 flow [2022-12-13 20:02:11,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 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 20:02:11,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:11,149 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 20:02:11,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:02:11,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:11,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:11,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1158647231, now seen corresponding path program 1 times [2022-12-13 20:02:11,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:11,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785805967] [2022-12-13 20:02:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:11,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:11,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:11,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54154986] [2022-12-13 20:02:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:11,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:11,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:11,380 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:11,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:02:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:11,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:02:11,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 20:02:11,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:11,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:11,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785805967] [2022-12-13 20:02:11,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:11,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54154986] [2022-12-13 20:02:11,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54154986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:11,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:11,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:02:11,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636949677] [2022-12-13 20:02:11,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:11,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:02:11,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:11,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:02:11,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:02:11,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 702 [2022-12-13 20:02:11,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 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 20:02:11,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:11,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 702 [2022-12-13 20:02:11,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:12,755 INFO L130 PetriNetUnfolder]: 9163/14962 cut-off events. [2022-12-13 20:02:12,755 INFO L131 PetriNetUnfolder]: For 472/472 co-relation queries the response was YES. [2022-12-13 20:02:12,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30278 conditions, 14962 events. 9163/14962 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 111195 event pairs, 6480 based on Foata normal form. 1/7721 useless extension candidates. Maximal degree in co-relation 30265. Up to 13207 conditions per place. [2022-12-13 20:02:12,797 INFO L137 encePairwiseOnDemand]: 696/702 looper letters, 117 selfloop transitions, 11 changer transitions 0/130 dead transitions. [2022-12-13 20:02:12,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 130 transitions, 712 flow [2022-12-13 20:02:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:02:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:02:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1296 transitions. [2022-12-13 20:02:12,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2022-12-13 20:02:12,799 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1296 transitions. [2022-12-13 20:02:12,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1296 transitions. [2022-12-13 20:02:12,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:12,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1296 transitions. [2022-12-13 20:02:12,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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 20:02:12,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:02:12,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:02:12,804 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 296 flow. Second operand 4 states and 1296 transitions. [2022-12-13 20:02:12,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 130 transitions, 712 flow [2022-12-13 20:02:12,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 130 transitions, 701 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 20:02:12,807 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 340 flow [2022-12-13 20:02:12,807 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=63, PETRI_TRANSITIONS=69} [2022-12-13 20:02:12,807 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2022-12-13 20:02:12,807 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 340 flow [2022-12-13 20:02:12,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 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 20:02:12,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:12,808 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:12,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 20:02:13,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:13,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:13,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:13,010 INFO L85 PathProgramCache]: Analyzing trace with hash -623771212, now seen corresponding path program 1 times [2022-12-13 20:02:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:13,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020663289] [2022-12-13 20:02:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:13,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:13,017 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:13,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692551169] [2022-12-13 20:02:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:13,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:13,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:13,018 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:13,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 20:02:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:13,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:02:13,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:13,115 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 20:02:13,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:13,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:13,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020663289] [2022-12-13 20:02:13,116 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:13,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692551169] [2022-12-13 20:02:13,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692551169] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:13,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:13,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:02:13,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536304341] [2022-12-13 20:02:13,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:13,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:02:13,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:13,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:02:13,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:02:13,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 702 [2022-12-13 20:02:13,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 340 flow. Second operand has 5 states, 5 states have (on average 295.6) internal successors, (1478), 5 states have internal predecessors, (1478), 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 20:02:13,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:13,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 702 [2022-12-13 20:02:13,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:14,799 INFO L130 PetriNetUnfolder]: 10742/18766 cut-off events. [2022-12-13 20:02:14,799 INFO L131 PetriNetUnfolder]: For 641/641 co-relation queries the response was YES. [2022-12-13 20:02:14,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38140 conditions, 18766 events. 10742/18766 cut-off events. For 641/641 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 150964 event pairs, 6416 based on Foata normal form. 0/11023 useless extension candidates. Maximal degree in co-relation 38125. Up to 12460 conditions per place. [2022-12-13 20:02:14,850 INFO L137 encePairwiseOnDemand]: 693/702 looper letters, 162 selfloop transitions, 17 changer transitions 0/180 dead transitions. [2022-12-13 20:02:14,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 180 transitions, 1045 flow [2022-12-13 20:02:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:02:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:02:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2201 transitions. [2022-12-13 20:02:14,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4479039479039479 [2022-12-13 20:02:14,853 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2201 transitions. [2022-12-13 20:02:14,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2201 transitions. [2022-12-13 20:02:14,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:14,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2201 transitions. [2022-12-13 20:02:14,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.42857142857144) internal successors, (2201), 7 states have internal predecessors, (2201), 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 20:02:14,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 702.0) internal successors, (5616), 8 states have internal predecessors, (5616), 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 20:02:14,859 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 702.0) internal successors, (5616), 8 states have internal predecessors, (5616), 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 20:02:14,859 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 340 flow. Second operand 7 states and 2201 transitions. [2022-12-13 20:02:14,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 180 transitions, 1045 flow [2022-12-13 20:02:14,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 180 transitions, 1039 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 20:02:14,862 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 459 flow [2022-12-13 20:02:14,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2022-12-13 20:02:14,863 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2022-12-13 20:02:14,863 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 459 flow [2022-12-13 20:02:14,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 295.6) internal successors, (1478), 5 states have internal predecessors, (1478), 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 20:02:14,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:14,863 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-12-13 20:02:14,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 20:02:15,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:15,064 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:15,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:15,065 INFO L85 PathProgramCache]: Analyzing trace with hash -377987665, now seen corresponding path program 1 times [2022-12-13 20:02:15,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:15,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022707632] [2022-12-13 20:02:15,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:15,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:15,095 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:15,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945764186] [2022-12-13 20:02:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:15,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:15,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:15,098 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:15,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 20:02:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:15,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 20:02:15,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:02:15,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:02:15,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:15,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022707632] [2022-12-13 20:02:15,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:15,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945764186] [2022-12-13 20:02:15,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945764186] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:15,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:02:15,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 20:02:15,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445071279] [2022-12-13 20:02:15,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:15,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:02:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:02:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:02:15,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 702 [2022-12-13 20:02:15,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 459 flow. Second operand has 10 states, 10 states have (on average 292.2) internal successors, (2922), 10 states have internal predecessors, (2922), 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 20:02:15,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:15,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 702 [2022-12-13 20:02:15,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:17,997 INFO L130 PetriNetUnfolder]: 14627/25157 cut-off events. [2022-12-13 20:02:17,997 INFO L131 PetriNetUnfolder]: For 8239/9247 co-relation queries the response was YES. [2022-12-13 20:02:18,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55152 conditions, 25157 events. 14627/25157 cut-off events. For 8239/9247 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 217792 event pairs, 10728 based on Foata normal form. 1009/16892 useless extension candidates. Maximal degree in co-relation 55131. Up to 15931 conditions per place. [2022-12-13 20:02:18,112 INFO L137 encePairwiseOnDemand]: 691/702 looper letters, 180 selfloop transitions, 72 changer transitions 0/256 dead transitions. [2022-12-13 20:02:18,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 256 transitions, 1587 flow [2022-12-13 20:02:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 20:02:18,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 20:02:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3990 transitions. [2022-12-13 20:02:18,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43721236028928334 [2022-12-13 20:02:18,120 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3990 transitions. [2022-12-13 20:02:18,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3990 transitions. [2022-12-13 20:02:18,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:18,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3990 transitions. [2022-12-13 20:02:18,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 306.9230769230769) internal successors, (3990), 13 states have internal predecessors, (3990), 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 20:02:18,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 702.0) internal successors, (9828), 14 states have internal predecessors, (9828), 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 20:02:18,137 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 702.0) internal successors, (9828), 14 states have internal predecessors, (9828), 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 20:02:18,137 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 459 flow. Second operand 13 states and 3990 transitions. [2022-12-13 20:02:18,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 256 transitions, 1587 flow [2022-12-13 20:02:18,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 256 transitions, 1587 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:02:18,192 INFO L231 Difference]: Finished difference. Result has 89 places, 118 transitions, 978 flow [2022-12-13 20:02:18,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=978, PETRI_PLACES=89, PETRI_TRANSITIONS=118} [2022-12-13 20:02:18,193 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2022-12-13 20:02:18,193 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 118 transitions, 978 flow [2022-12-13 20:02:18,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 292.2) internal successors, (2922), 10 states have internal predecessors, (2922), 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 20:02:18,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:18,194 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-12-13 20:02:18,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 20:02:18,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:18,396 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1347782760, now seen corresponding path program 1 times [2022-12-13 20:02:18,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:18,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292319783] [2022-12-13 20:02:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:18,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:18,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:18,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783514941] [2022-12-13 20:02:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:18,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:18,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:18,445 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:18,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 20:02:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:18,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:02:18,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:02:18,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:02:18,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:18,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292319783] [2022-12-13 20:02:18,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:18,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783514941] [2022-12-13 20:02:18,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783514941] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:18,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:02:18,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-12-13 20:02:18,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750972660] [2022-12-13 20:02:18,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:18,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 20:02:18,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:02:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:02:18,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 702 [2022-12-13 20:02:18,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 118 transitions, 978 flow. Second operand has 12 states, 12 states have (on average 303.25) internal successors, (3639), 12 states have internal predecessors, (3639), 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 20:02:18,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:18,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 702 [2022-12-13 20:02:18,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:23,476 INFO L130 PetriNetUnfolder]: 27095/46355 cut-off events. [2022-12-13 20:02:23,476 INFO L131 PetriNetUnfolder]: For 15494/17164 co-relation queries the response was YES. [2022-12-13 20:02:23,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102253 conditions, 46355 events. 27095/46355 cut-off events. For 15494/17164 co-relation queries the response was YES. Maximal size of possible extension queue 2191. Compared 421636 event pairs, 19800 based on Foata normal form. 1736/30883 useless extension candidates. Maximal degree in co-relation 102229. Up to 7357 conditions per place. [2022-12-13 20:02:23,715 INFO L137 encePairwiseOnDemand]: 694/702 looper letters, 435 selfloop transitions, 74 changer transitions 0/513 dead transitions. [2022-12-13 20:02:23,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 513 transitions, 3668 flow [2022-12-13 20:02:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:02:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 20:02:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4046 transitions. [2022-12-13 20:02:23,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48029439696106363 [2022-12-13 20:02:23,722 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4046 transitions. [2022-12-13 20:02:23,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4046 transitions. [2022-12-13 20:02:23,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:23,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4046 transitions. [2022-12-13 20:02:23,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 337.1666666666667) internal successors, (4046), 12 states have internal predecessors, (4046), 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 20:02:23,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 702.0) internal successors, (9126), 13 states have internal predecessors, (9126), 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 20:02:23,737 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 702.0) internal successors, (9126), 13 states have internal predecessors, (9126), 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 20:02:23,738 INFO L175 Difference]: Start difference. First operand has 89 places, 118 transitions, 978 flow. Second operand 12 states and 4046 transitions. [2022-12-13 20:02:23,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 513 transitions, 3668 flow [2022-12-13 20:02:23,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 513 transitions, 3630 flow, removed 19 selfloop flow, removed 0 redundant places. [2022-12-13 20:02:23,859 INFO L231 Difference]: Finished difference. Result has 106 places, 154 transitions, 1530 flow [2022-12-13 20:02:23,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1530, PETRI_PLACES=106, PETRI_TRANSITIONS=154} [2022-12-13 20:02:23,860 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2022-12-13 20:02:23,860 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 154 transitions, 1530 flow [2022-12-13 20:02:23,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 303.25) internal successors, (3639), 12 states have internal predecessors, (3639), 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 20:02:23,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:23,861 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:23,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 20:02:24,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 20:02:24,062 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:24,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:24,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2143987299, now seen corresponding path program 1 times [2022-12-13 20:02:24,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:24,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744097815] [2022-12-13 20:02:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:24,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:24,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:24,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383878237] [2022-12-13 20:02:24,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:24,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:24,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:24,078 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:24,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 20:02:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:24,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:02:24,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:24,196 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 20:02:24,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:24,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:24,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744097815] [2022-12-13 20:02:24,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:24,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383878237] [2022-12-13 20:02:24,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383878237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:24,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:24,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:02:24,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292055517] [2022-12-13 20:02:24,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:24,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:02:24,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:02:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:02:24,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 702 [2022-12-13 20:02:24,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 154 transitions, 1530 flow. Second operand has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 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 20:02:24,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:24,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 702 [2022-12-13 20:02:24,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:28,324 INFO L130 PetriNetUnfolder]: 23642/40982 cut-off events. [2022-12-13 20:02:28,324 INFO L131 PetriNetUnfolder]: For 13406/15034 co-relation queries the response was YES. [2022-12-13 20:02:28,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91403 conditions, 40982 events. 23642/40982 cut-off events. For 13406/15034 co-relation queries the response was YES. Maximal size of possible extension queue 1844. Compared 367496 event pairs, 17676 based on Foata normal form. 1642/28347 useless extension candidates. Maximal degree in co-relation 91372. Up to 39368 conditions per place. [2022-12-13 20:02:28,544 INFO L137 encePairwiseOnDemand]: 695/702 looper letters, 181 selfloop transitions, 12 changer transitions 7/203 dead transitions. [2022-12-13 20:02:28,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 203 transitions, 2307 flow [2022-12-13 20:02:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:02:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:02:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1566 transitions. [2022-12-13 20:02:28,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2022-12-13 20:02:28,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1566 transitions. [2022-12-13 20:02:28,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1566 transitions. [2022-12-13 20:02:28,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:28,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1566 transitions. [2022-12-13 20:02:28,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.2) internal successors, (1566), 5 states have internal predecessors, (1566), 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 20:02:28,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 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 20:02:28,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 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 20:02:28,551 INFO L175 Difference]: Start difference. First operand has 106 places, 154 transitions, 1530 flow. Second operand 5 states and 1566 transitions. [2022-12-13 20:02:28,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 203 transitions, 2307 flow [2022-12-13 20:02:28,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 203 transitions, 2057 flow, removed 52 selfloop flow, removed 5 redundant places. [2022-12-13 20:02:28,660 INFO L231 Difference]: Finished difference. Result has 108 places, 156 transitions, 1392 flow [2022-12-13 20:02:28,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1392, PETRI_PLACES=108, PETRI_TRANSITIONS=156} [2022-12-13 20:02:28,660 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2022-12-13 20:02:28,660 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 156 transitions, 1392 flow [2022-12-13 20:02:28,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 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 20:02:28,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:28,661 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:28,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 20:02:28,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 20:02:28,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:28,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:28,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1534281858, now seen corresponding path program 1 times [2022-12-13 20:02:28,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:28,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597139035] [2022-12-13 20:02:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:28,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:28,871 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:28,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101935518] [2022-12-13 20:02:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:28,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:28,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:28,873 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:28,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 20:02:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:28,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:28,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:02:28,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:28,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:28,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597139035] [2022-12-13 20:02:28,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:28,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101935518] [2022-12-13 20:02:28,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101935518] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:28,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:28,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:02:28,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522039712] [2022-12-13 20:02:28,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:28,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:02:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:02:28,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:02:28,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 702 [2022-12-13 20:02:28,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 156 transitions, 1392 flow. Second operand has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 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 20:02:28,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:28,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 702 [2022-12-13 20:02:28,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:33,353 INFO L130 PetriNetUnfolder]: 22817/40041 cut-off events. [2022-12-13 20:02:33,354 INFO L131 PetriNetUnfolder]: For 12214/12339 co-relation queries the response was YES. [2022-12-13 20:02:33,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93303 conditions, 40041 events. 22817/40041 cut-off events. For 12214/12339 co-relation queries the response was YES. Maximal size of possible extension queue 1654. Compared 369950 event pairs, 1535 based on Foata normal form. 125/28479 useless extension candidates. Maximal degree in co-relation 93269. Up to 34198 conditions per place. [2022-12-13 20:02:33,638 INFO L137 encePairwiseOnDemand]: 700/702 looper letters, 167 selfloop transitions, 3 changer transitions 0/172 dead transitions. [2022-12-13 20:02:33,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 172 transitions, 1767 flow [2022-12-13 20:02:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:02:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:02:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2022-12-13 20:02:33,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4677113010446344 [2022-12-13 20:02:33,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2022-12-13 20:02:33,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2022-12-13 20:02:33,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:33,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2022-12-13 20:02:33,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 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 20:02:33,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:33,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:33,645 INFO L175 Difference]: Start difference. First operand has 108 places, 156 transitions, 1392 flow. Second operand 3 states and 985 transitions. [2022-12-13 20:02:33,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 172 transitions, 1767 flow [2022-12-13 20:02:33,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 172 transitions, 1747 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:02:33,831 INFO L231 Difference]: Finished difference. Result has 107 places, 155 transitions, 1376 flow [2022-12-13 20:02:33,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1376, PETRI_PLACES=107, PETRI_TRANSITIONS=155} [2022-12-13 20:02:33,831 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2022-12-13 20:02:33,831 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 155 transitions, 1376 flow [2022-12-13 20:02:33,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 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 20:02:33,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:33,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:33,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 20:02:34,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 20:02:34,033 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:34,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1534281859, now seen corresponding path program 1 times [2022-12-13 20:02:34,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:34,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003176098] [2022-12-13 20:02:34,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:34,076 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:34,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853491329] [2022-12-13 20:02:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:34,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:34,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:34,080 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:34,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 20:02:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:34,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:34,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:02:34,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:34,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:34,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003176098] [2022-12-13 20:02:34,190 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:34,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853491329] [2022-12-13 20:02:34,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853491329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:34,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:34,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:02:34,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163394911] [2022-12-13 20:02:34,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:34,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:02:34,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:34,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:02:34,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:02:34,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 702 [2022-12-13 20:02:34,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 155 transitions, 1376 flow. Second operand has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 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 20:02:34,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:34,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 702 [2022-12-13 20:02:34,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:39,429 INFO L130 PetriNetUnfolder]: 32189/55958 cut-off events. [2022-12-13 20:02:39,429 INFO L131 PetriNetUnfolder]: For 25185/25398 co-relation queries the response was YES. [2022-12-13 20:02:39,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132720 conditions, 55958 events. 32189/55958 cut-off events. For 25185/25398 co-relation queries the response was YES. Maximal size of possible extension queue 2186. Compared 522082 event pairs, 11805 based on Foata normal form. 213/40688 useless extension candidates. Maximal degree in co-relation 132686. Up to 28384 conditions per place. [2022-12-13 20:02:39,806 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 174 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2022-12-13 20:02:39,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 180 transitions, 1795 flow [2022-12-13 20:02:39,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:02:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:02:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 993 transitions. [2022-12-13 20:02:39,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47150997150997154 [2022-12-13 20:02:39,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 993 transitions. [2022-12-13 20:02:39,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 993 transitions. [2022-12-13 20:02:39,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:39,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 993 transitions. [2022-12-13 20:02:39,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 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 20:02:39,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:39,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:39,812 INFO L175 Difference]: Start difference. First operand has 107 places, 155 transitions, 1376 flow. Second operand 3 states and 993 transitions. [2022-12-13 20:02:39,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 180 transitions, 1795 flow [2022-12-13 20:02:40,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 180 transitions, 1792 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:02:40,182 INFO L231 Difference]: Finished difference. Result has 109 places, 156 transitions, 1391 flow [2022-12-13 20:02:40,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1391, PETRI_PLACES=109, PETRI_TRANSITIONS=156} [2022-12-13 20:02:40,182 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2022-12-13 20:02:40,182 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 156 transitions, 1391 flow [2022-12-13 20:02:40,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 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 20:02:40,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:40,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:40,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 20:02:40,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:40,384 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:40,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:40,385 INFO L85 PathProgramCache]: Analyzing trace with hash 213638255, now seen corresponding path program 1 times [2022-12-13 20:02:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:40,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910265633] [2022-12-13 20:02:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:40,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:40,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349766965] [2022-12-13 20:02:40,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:40,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:40,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:40,423 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:40,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 20:02:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:40,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:40,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:40,507 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 20:02:40,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:40,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:40,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910265633] [2022-12-13 20:02:40,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:40,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349766965] [2022-12-13 20:02:40,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349766965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:40,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:40,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:02:40,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077374667] [2022-12-13 20:02:40,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:40,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:02:40,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:40,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:02:40,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:02:40,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 702 [2022-12-13 20:02:40,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 156 transitions, 1391 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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 20:02:40,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:40,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 702 [2022-12-13 20:02:40,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:45,062 INFO L130 PetriNetUnfolder]: 24280/44318 cut-off events. [2022-12-13 20:02:45,062 INFO L131 PetriNetUnfolder]: For 18757/20403 co-relation queries the response was YES. [2022-12-13 20:02:45,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107155 conditions, 44318 events. 24280/44318 cut-off events. For 18757/20403 co-relation queries the response was YES. Maximal size of possible extension queue 2131. Compared 432846 event pairs, 3123 based on Foata normal form. 1646/34423 useless extension candidates. Maximal degree in co-relation 107120. Up to 35159 conditions per place. [2022-12-13 20:02:45,344 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 161 selfloop transitions, 1 changer transitions 0/167 dead transitions. [2022-12-13 20:02:45,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 167 transitions, 1756 flow [2022-12-13 20:02:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:02:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:02:45,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 978 transitions. [2022-12-13 20:02:45,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2022-12-13 20:02:45,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 978 transitions. [2022-12-13 20:02:45,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 978 transitions. [2022-12-13 20:02:45,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:45,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 978 transitions. [2022-12-13 20:02:45,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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 20:02:45,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:45,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:45,350 INFO L175 Difference]: Start difference. First operand has 109 places, 156 transitions, 1391 flow. Second operand 3 states and 978 transitions. [2022-12-13 20:02:45,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 167 transitions, 1756 flow [2022-12-13 20:02:45,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 167 transitions, 1751 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:02:45,472 INFO L231 Difference]: Finished difference. Result has 109 places, 155 transitions, 1392 flow [2022-12-13 20:02:45,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1392, PETRI_PLACES=109, PETRI_TRANSITIONS=155} [2022-12-13 20:02:45,472 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2022-12-13 20:02:45,473 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 155 transitions, 1392 flow [2022-12-13 20:02:45,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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 20:02:45,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:45,473 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:45,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 20:02:45,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 20:02:45,674 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash 213638245, now seen corresponding path program 1 times [2022-12-13 20:02:45,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:45,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413533066] [2022-12-13 20:02:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:45,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:45,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:45,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91865750] [2022-12-13 20:02:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:45,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:45,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:45,701 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:45,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 20:02:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:45,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:45,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:45,815 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 20:02:45,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:45,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:45,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413533066] [2022-12-13 20:02:45,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:45,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91865750] [2022-12-13 20:02:45,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91865750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:45,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:45,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:02:45,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695729730] [2022-12-13 20:02:45,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:45,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:02:45,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:02:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:02:45,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 702 [2022-12-13 20:02:45,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 155 transitions, 1392 flow. Second operand has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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 20:02:45,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:45,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 702 [2022-12-13 20:02:45,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:50,156 INFO L130 PetriNetUnfolder]: 24573/44518 cut-off events. [2022-12-13 20:02:50,156 INFO L131 PetriNetUnfolder]: For 22017/23517 co-relation queries the response was YES. [2022-12-13 20:02:50,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111692 conditions, 44518 events. 24573/44518 cut-off events. For 22017/23517 co-relation queries the response was YES. Maximal size of possible extension queue 1952. Compared 428867 event pairs, 1314 based on Foata normal form. 1500/36298 useless extension candidates. Maximal degree in co-relation 111657. Up to 39605 conditions per place. [2022-12-13 20:02:50,394 INFO L137 encePairwiseOnDemand]: 700/702 looper letters, 157 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2022-12-13 20:02:50,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 162 transitions, 1735 flow [2022-12-13 20:02:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:02:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:02:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 972 transitions. [2022-12-13 20:02:50,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2022-12-13 20:02:50,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 972 transitions. [2022-12-13 20:02:50,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 972 transitions. [2022-12-13 20:02:50,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:50,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 972 transitions. [2022-12-13 20:02:50,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 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 20:02:50,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:50,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:50,400 INFO L175 Difference]: Start difference. First operand has 109 places, 155 transitions, 1392 flow. Second operand 3 states and 972 transitions. [2022-12-13 20:02:50,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 162 transitions, 1735 flow [2022-12-13 20:02:50,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 162 transitions, 1735 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:02:50,528 INFO L231 Difference]: Finished difference. Result has 110 places, 154 transitions, 1394 flow [2022-12-13 20:02:50,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1394, PETRI_PLACES=110, PETRI_TRANSITIONS=154} [2022-12-13 20:02:50,529 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2022-12-13 20:02:50,529 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 154 transitions, 1394 flow [2022-12-13 20:02:50,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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 20:02:50,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:50,529 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:50,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 20:02:50,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 20:02:50,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:50,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash 213638246, now seen corresponding path program 1 times [2022-12-13 20:02:50,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:50,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030758045] [2022-12-13 20:02:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:50,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:50,764 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:50,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306996830] [2022-12-13 20:02:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:50,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:50,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:50,767 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:50,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 20:02:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:50,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:50,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:50,868 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 20:02:50,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:50,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:50,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030758045] [2022-12-13 20:02:50,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:50,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306996830] [2022-12-13 20:02:50,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306996830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:50,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:50,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:02:50,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889334331] [2022-12-13 20:02:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:50,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:02:50,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:02:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:02:50,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 702 [2022-12-13 20:02:50,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 154 transitions, 1394 flow. Second operand has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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 20:02:50,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:50,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 702 [2022-12-13 20:02:50,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:57,467 INFO L130 PetriNetUnfolder]: 37345/66236 cut-off events. [2022-12-13 20:02:57,467 INFO L131 PetriNetUnfolder]: For 33927/36225 co-relation queries the response was YES. [2022-12-13 20:02:57,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161719 conditions, 66236 events. 37345/66236 cut-off events. For 33927/36225 co-relation queries the response was YES. Maximal size of possible extension queue 2829. Compared 649228 event pairs, 16694 based on Foata normal form. 2298/51696 useless extension candidates. Maximal degree in co-relation 161683. Up to 37030 conditions per place. [2022-12-13 20:02:57,837 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 168 selfloop transitions, 3 changer transitions 0/174 dead transitions. [2022-12-13 20:02:57,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 174 transitions, 1792 flow [2022-12-13 20:02:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:02:57,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:02:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2022-12-13 20:02:57,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4677113010446344 [2022-12-13 20:02:57,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2022-12-13 20:02:57,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2022-12-13 20:02:57,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:57,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2022-12-13 20:02:57,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 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 20:02:57,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:57,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:02:57,842 INFO L175 Difference]: Start difference. First operand has 110 places, 154 transitions, 1394 flow. Second operand 3 states and 985 transitions. [2022-12-13 20:02:57,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 174 transitions, 1792 flow [2022-12-13 20:02:58,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 174 transitions, 1790 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:02:58,086 INFO L231 Difference]: Finished difference. Result has 112 places, 155 transitions, 1407 flow [2022-12-13 20:02:58,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1407, PETRI_PLACES=112, PETRI_TRANSITIONS=155} [2022-12-13 20:02:58,087 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2022-12-13 20:02:58,087 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 155 transitions, 1407 flow [2022-12-13 20:02:58,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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 20:02:58,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:58,087 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:58,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 20:02:58,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 20:02:58,288 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:02:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash 213638332, now seen corresponding path program 1 times [2022-12-13 20:02:58,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:58,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732501537] [2022-12-13 20:02:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:58,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:58,322 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:58,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791725134] [2022-12-13 20:02:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:58,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:58,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:58,326 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:58,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 20:02:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:58,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:02:58,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:02:58,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:58,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:58,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732501537] [2022-12-13 20:02:58,462 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:58,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791725134] [2022-12-13 20:02:58,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791725134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:58,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:58,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:02:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748904845] [2022-12-13 20:02:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:58,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:02:58,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:02:58,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:02:58,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 702 [2022-12-13 20:02:58,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 155 transitions, 1407 flow. Second operand has 5 states, 5 states have (on average 296.2) internal successors, (1481), 5 states have internal predecessors, (1481), 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 20:02:58,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:58,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 702 [2022-12-13 20:02:58,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:03:06,319 INFO L130 PetriNetUnfolder]: 39315/70888 cut-off events. [2022-12-13 20:03:06,319 INFO L131 PetriNetUnfolder]: For 37822/40320 co-relation queries the response was YES. [2022-12-13 20:03:06,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184054 conditions, 70888 events. 39315/70888 cut-off events. For 37822/40320 co-relation queries the response was YES. Maximal size of possible extension queue 2943. Compared 714188 event pairs, 26345 based on Foata normal form. 4768/61754 useless extension candidates. Maximal degree in co-relation 184017. Up to 51804 conditions per place. [2022-12-13 20:03:06,761 INFO L137 encePairwiseOnDemand]: 691/702 looper letters, 195 selfloop transitions, 77 changer transitions 4/281 dead transitions. [2022-12-13 20:03:06,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 281 transitions, 2884 flow [2022-12-13 20:03:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:03:06,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:03:06,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2174 transitions. [2022-12-13 20:03:06,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4424094424094424 [2022-12-13 20:03:06,765 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2174 transitions. [2022-12-13 20:03:06,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2174 transitions. [2022-12-13 20:03:06,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:03:06,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2174 transitions. [2022-12-13 20:03:06,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 310.57142857142856) internal successors, (2174), 7 states have internal predecessors, (2174), 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 20:03:06,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 702.0) internal successors, (5616), 8 states have internal predecessors, (5616), 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 20:03:06,771 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 702.0) internal successors, (5616), 8 states have internal predecessors, (5616), 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 20:03:06,771 INFO L175 Difference]: Start difference. First operand has 112 places, 155 transitions, 1407 flow. Second operand 7 states and 2174 transitions. [2022-12-13 20:03:06,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 281 transitions, 2884 flow [2022-12-13 20:03:07,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 281 transitions, 2879 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:03:07,088 INFO L231 Difference]: Finished difference. Result has 123 places, 197 transitions, 2261 flow [2022-12-13 20:03:07,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2261, PETRI_PLACES=123, PETRI_TRANSITIONS=197} [2022-12-13 20:03:07,088 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2022-12-13 20:03:07,088 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 197 transitions, 2261 flow [2022-12-13 20:03:07,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 296.2) internal successors, (1481), 5 states have internal predecessors, (1481), 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 20:03:07,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:03:07,088 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:07,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 20:03:07,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:07,290 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:03:07,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:07,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1271054739, now seen corresponding path program 1 times [2022-12-13 20:03:07,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:07,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836373085] [2022-12-13 20:03:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:07,323 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:03:07,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128950212] [2022-12-13 20:03:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:07,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:07,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:07,326 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:07,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 20:03:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:07,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:03:07,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:03:07,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:03:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:03:07,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:07,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836373085] [2022-12-13 20:03:07,502 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:03:07,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128950212] [2022-12-13 20:03:07,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128950212] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:03:07,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:03:07,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 20:03:07,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10273953] [2022-12-13 20:03:07,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:03:07,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 20:03:07,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 20:03:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:03:07,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 702 [2022-12-13 20:03:07,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 197 transitions, 2261 flow. Second operand has 11 states, 11 states have (on average 288.72727272727275) internal successors, (3176), 11 states have internal predecessors, (3176), 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 20:03:07,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:03:07,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 702 [2022-12-13 20:03:07,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:03:22,287 INFO L130 PetriNetUnfolder]: 67149/119933 cut-off events. [2022-12-13 20:03:22,288 INFO L131 PetriNetUnfolder]: For 110947/111154 co-relation queries the response was YES. [2022-12-13 20:03:22,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360381 conditions, 119933 events. 67149/119933 cut-off events. For 110947/111154 co-relation queries the response was YES. Maximal size of possible extension queue 4020. Compared 1256057 event pairs, 18230 based on Foata normal form. 2563/101385 useless extension candidates. Maximal degree in co-relation 360339. Up to 33823 conditions per place. [2022-12-13 20:03:23,239 INFO L137 encePairwiseOnDemand]: 690/702 looper letters, 316 selfloop transitions, 32 changer transitions 48/398 dead transitions. [2022-12-13 20:03:23,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 398 transitions, 4318 flow [2022-12-13 20:03:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 20:03:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 20:03:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5071 transitions. [2022-12-13 20:03:23,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4249203955086308 [2022-12-13 20:03:23,245 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5071 transitions. [2022-12-13 20:03:23,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5071 transitions. [2022-12-13 20:03:23,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:03:23,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5071 transitions. [2022-12-13 20:03:23,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 298.29411764705884) internal successors, (5071), 17 states have internal predecessors, (5071), 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 20:03:23,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 702.0) internal successors, (12636), 18 states have internal predecessors, (12636), 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 20:03:23,258 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 702.0) internal successors, (12636), 18 states have internal predecessors, (12636), 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 20:03:23,258 INFO L175 Difference]: Start difference. First operand has 123 places, 197 transitions, 2261 flow. Second operand 17 states and 5071 transitions. [2022-12-13 20:03:23,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 398 transitions, 4318 flow [2022-12-13 20:03:25,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 398 transitions, 4284 flow, removed 17 selfloop flow, removed 0 redundant places. [2022-12-13 20:03:25,092 INFO L231 Difference]: Finished difference. Result has 146 places, 202 transitions, 2402 flow [2022-12-13 20:03:25,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2402, PETRI_PLACES=146, PETRI_TRANSITIONS=202} [2022-12-13 20:03:25,092 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2022-12-13 20:03:25,092 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 202 transitions, 2402 flow [2022-12-13 20:03:25,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 288.72727272727275) internal successors, (3176), 11 states have internal predecessors, (3176), 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 20:03:25,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:03:25,093 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:25,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-13 20:03:25,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:25,294 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:03:25,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:25,295 INFO L85 PathProgramCache]: Analyzing trace with hash 531335825, now seen corresponding path program 1 times [2022-12-13 20:03:25,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:25,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667066993] [2022-12-13 20:03:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:25,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:25,326 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:03:25,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279985610] [2022-12-13 20:03:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:25,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:25,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:25,330 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:25,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 20:03:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:25,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:03:25,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:03:25,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:03:25,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:25,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667066993] [2022-12-13 20:03:25,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:03:25,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279985610] [2022-12-13 20:03:25,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279985610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:25,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:25,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:03:25,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419715671] [2022-12-13 20:03:25,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:25,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:03:25,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:25,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:03:25,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:03:25,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 702 [2022-12-13 20:03:25,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 202 transitions, 2402 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 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 20:03:25,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:03:25,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 702 [2022-12-13 20:03:25,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:03:38,919 INFO L130 PetriNetUnfolder]: 56357/101960 cut-off events. [2022-12-13 20:03:38,919 INFO L131 PetriNetUnfolder]: For 170275/172543 co-relation queries the response was YES. [2022-12-13 20:03:39,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337699 conditions, 101960 events. 56357/101960 cut-off events. For 170275/172543 co-relation queries the response was YES. Maximal size of possible extension queue 3830. Compared 1071466 event pairs, 28692 based on Foata normal form. 2268/88700 useless extension candidates. Maximal degree in co-relation 337650. Up to 63872 conditions per place. [2022-12-13 20:03:39,795 INFO L137 encePairwiseOnDemand]: 698/702 looper letters, 215 selfloop transitions, 3 changer transitions 0/222 dead transitions. [2022-12-13 20:03:39,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 222 transitions, 2940 flow [2022-12-13 20:03:39,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:03:39,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:03:39,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 978 transitions. [2022-12-13 20:03:39,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2022-12-13 20:03:39,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 978 transitions. [2022-12-13 20:03:39,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 978 transitions. [2022-12-13 20:03:39,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:03:39,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 978 transitions. [2022-12-13 20:03:39,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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 20:03:39,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:03:39,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:03:39,800 INFO L175 Difference]: Start difference. First operand has 146 places, 202 transitions, 2402 flow. Second operand 3 states and 978 transitions. [2022-12-13 20:03:39,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 222 transitions, 2940 flow [2022-12-13 20:03:41,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 222 transitions, 2913 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-13 20:03:41,587 INFO L231 Difference]: Finished difference. Result has 141 places, 202 transitions, 2392 flow [2022-12-13 20:03:41,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2392, PETRI_PLACES=141, PETRI_TRANSITIONS=202} [2022-12-13 20:03:41,587 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2022-12-13 20:03:41,588 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 202 transitions, 2392 flow [2022-12-13 20:03:41,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 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 20:03:41,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:03:41,588 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:41,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 20:03:41,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 20:03:41,789 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:03:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash 531335942, now seen corresponding path program 1 times [2022-12-13 20:03:41,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:41,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042867365] [2022-12-13 20:03:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:41,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:41,825 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:03:41,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772655523] [2022-12-13 20:03:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:41,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:41,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:41,829 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:41,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 20:03:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:41,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:03:41,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:03:41,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:03:41,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:41,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042867365] [2022-12-13 20:03:41,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:03:41,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772655523] [2022-12-13 20:03:41,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772655523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:41,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:41,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:03:41,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097662175] [2022-12-13 20:03:41,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:41,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:03:41,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:41,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:03:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:03:41,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 702 [2022-12-13 20:03:41,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 202 transitions, 2392 flow. Second operand has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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 20:03:41,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:03:41,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 702 [2022-12-13 20:03:41,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:04:00,560 INFO L130 PetriNetUnfolder]: 77394/138500 cut-off events. [2022-12-13 20:04:00,560 INFO L131 PetriNetUnfolder]: For 189240/192386 co-relation queries the response was YES. [2022-12-13 20:04:01,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450867 conditions, 138500 events. 77394/138500 cut-off events. For 189240/192386 co-relation queries the response was YES. Maximal size of possible extension queue 5151. Compared 1492681 event pairs, 35213 based on Foata normal form. 3146/122295 useless extension candidates. Maximal degree in co-relation 450818. Up to 76852 conditions per place. [2022-12-13 20:04:01,759 INFO L137 encePairwiseOnDemand]: 698/702 looper letters, 215 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2022-12-13 20:04:01,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 226 transitions, 2959 flow [2022-12-13 20:04:01,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:04:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:04:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 984 transitions. [2022-12-13 20:04:01,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2022-12-13 20:04:01,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 984 transitions. [2022-12-13 20:04:01,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 984 transitions. [2022-12-13 20:04:01,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:04:01,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 984 transitions. [2022-12-13 20:04:01,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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 20:04:01,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:04:01,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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 20:04:01,765 INFO L175 Difference]: Start difference. First operand has 141 places, 202 transitions, 2392 flow. Second operand 3 states and 984 transitions. [2022-12-13 20:04:01,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 226 transitions, 2959 flow [2022-12-13 20:04:03,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 226 transitions, 2951 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:04:03,150 INFO L231 Difference]: Finished difference. Result has 143 places, 204 transitions, 2422 flow [2022-12-13 20:04:03,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2386, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2422, PETRI_PLACES=143, PETRI_TRANSITIONS=204} [2022-12-13 20:04:03,150 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 90 predicate places. [2022-12-13 20:04:03,150 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 204 transitions, 2422 flow [2022-12-13 20:04:03,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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 20:04:03,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:04:03,150 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1] [2022-12-13 20:04:03,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 20:04:03,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 20:04:03,352 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:04:03,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:03,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1435687042, now seen corresponding path program 2 times [2022-12-13 20:04:03,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:03,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257243016] [2022-12-13 20:04:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:03,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:03,395 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:04:03,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869687593] [2022-12-13 20:04:03,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:04:03,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:03,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:03,399 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:03,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 20:04:03,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:04:03,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:04:03,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:04:03,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 20:04:03,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:04:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 20:04:03,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:03,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257243016] [2022-12-13 20:04:03,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:04:03,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869687593] [2022-12-13 20:04:03,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869687593] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:04:03,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:04:03,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2022-12-13 20:04:03,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48903091] [2022-12-13 20:04:03,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:04:03,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:04:03,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:03,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:04:03,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:04:03,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 702 [2022-12-13 20:04:03,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 204 transitions, 2422 flow. Second operand has 4 states, 4 states have (on average 303.75) internal successors, (1215), 4 states have internal predecessors, (1215), 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 20:04:03,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:04:03,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 702 [2022-12-13 20:04:03,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:04:21,447 INFO L130 PetriNetUnfolder]: 77389/138424 cut-off events. [2022-12-13 20:04:21,447 INFO L131 PetriNetUnfolder]: For 231342/234499 co-relation queries the response was YES. [2022-12-13 20:04:22,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472910 conditions, 138424 events. 77389/138424 cut-off events. For 231342/234499 co-relation queries the response was YES. Maximal size of possible extension queue 5157. Compared 1488796 event pairs, 64787 based on Foata normal form. 3233/126765 useless extension candidates. Maximal degree in co-relation 472860. Up to 135924 conditions per place. [2022-12-13 20:04:22,801 INFO L137 encePairwiseOnDemand]: 697/702 looper letters, 119 selfloop transitions, 90 changer transitions 4/219 dead transitions. [2022-12-13 20:04:22,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 219 transitions, 2937 flow [2022-12-13 20:04:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:04:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:04:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1258 transitions. [2022-12-13 20:04:22,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.448005698005698 [2022-12-13 20:04:22,803 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1258 transitions. [2022-12-13 20:04:22,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1258 transitions. [2022-12-13 20:04:22,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:04:22,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1258 transitions. [2022-12-13 20:04:22,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 314.5) internal successors, (1258), 4 states have internal predecessors, (1258), 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 20:04:22,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:04:22,807 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:04:22,807 INFO L175 Difference]: Start difference. First operand has 143 places, 204 transitions, 2422 flow. Second operand 4 states and 1258 transitions. [2022-12-13 20:04:22,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 219 transitions, 2937 flow [2022-12-13 20:04:23,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 219 transitions, 2859 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-12-13 20:04:23,924 INFO L231 Difference]: Finished difference. Result has 140 places, 206 transitions, 2674 flow [2022-12-13 20:04:23,924 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2243, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2674, PETRI_PLACES=140, PETRI_TRANSITIONS=206} [2022-12-13 20:04:23,925 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2022-12-13 20:04:23,925 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 206 transitions, 2674 flow [2022-12-13 20:04:23,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 303.75) internal successors, (1215), 4 states have internal predecessors, (1215), 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 20:04:23,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:04:23,925 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:04:23,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 20:04:24,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:24,126 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:04:24,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash -852016633, now seen corresponding path program 1 times [2022-12-13 20:04:24,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:24,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793171168] [2022-12-13 20:04:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:24,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:24,158 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:04:24,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162631060] [2022-12-13 20:04:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:24,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:24,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:24,162 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:24,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 20:04:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:24,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:04:24,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:04:24,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:04:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:04:24,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:24,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793171168] [2022-12-13 20:04:24,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:04:24,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162631060] [2022-12-13 20:04:24,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162631060] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:04:24,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:04:24,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 20:04:24,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521781954] [2022-12-13 20:04:24,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:04:24,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:04:24,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:04:24,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:04:24,544 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 702 [2022-12-13 20:04:24,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 206 transitions, 2674 flow. Second operand has 9 states, 9 states have (on average 298.0) internal successors, (2682), 9 states have internal predecessors, (2682), 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 20:04:24,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:04:24,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 702 [2022-12-13 20:04:24,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:04:26,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:43,356 INFO L130 PetriNetUnfolder]: 72999/130830 cut-off events. [2022-12-13 20:04:43,356 INFO L131 PetriNetUnfolder]: For 200576/203580 co-relation queries the response was YES. [2022-12-13 20:04:44,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439405 conditions, 130830 events. 72999/130830 cut-off events. For 200576/203580 co-relation queries the response was YES. Maximal size of possible extension queue 4452. Compared 1380927 event pairs, 47282 based on Foata normal form. 3958/122207 useless extension candidates. Maximal degree in co-relation 439358. Up to 98621 conditions per place. [2022-12-13 20:04:44,403 INFO L137 encePairwiseOnDemand]: 693/702 looper letters, 314 selfloop transitions, 26 changer transitions 24/368 dead transitions. [2022-12-13 20:04:44,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 368 transitions, 4694 flow [2022-12-13 20:04:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:04:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 20:04:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3680 transitions. [2022-12-13 20:04:44,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4368471035137702 [2022-12-13 20:04:44,407 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3680 transitions. [2022-12-13 20:04:44,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3680 transitions. [2022-12-13 20:04:44,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:04:44,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3680 transitions. [2022-12-13 20:04:44,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 306.6666666666667) internal successors, (3680), 12 states have internal predecessors, (3680), 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 20:04:44,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 702.0) internal successors, (9126), 13 states have internal predecessors, (9126), 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 20:04:44,416 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 702.0) internal successors, (9126), 13 states have internal predecessors, (9126), 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 20:04:44,416 INFO L175 Difference]: Start difference. First operand has 140 places, 206 transitions, 2674 flow. Second operand 12 states and 3680 transitions. [2022-12-13 20:04:44,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 368 transitions, 4694 flow [2022-12-13 20:04:46,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 368 transitions, 4581 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:04:46,268 INFO L231 Difference]: Finished difference. Result has 154 places, 212 transitions, 2700 flow [2022-12-13 20:04:46,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2584, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2700, PETRI_PLACES=154, PETRI_TRANSITIONS=212} [2022-12-13 20:04:46,268 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 101 predicate places. [2022-12-13 20:04:46,269 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 212 transitions, 2700 flow [2022-12-13 20:04:46,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 298.0) internal successors, (2682), 9 states have internal predecessors, (2682), 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 20:04:46,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:04:46,269 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:04:46,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 20:04:46,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 20:04:46,470 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:04:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:46,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1563007868, now seen corresponding path program 2 times [2022-12-13 20:04:46,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:46,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075004614] [2022-12-13 20:04:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:46,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:46,486 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:04:46,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187181130] [2022-12-13 20:04:46,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:04:46,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:46,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:46,487 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:46,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 20:04:46,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:04:46,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:04:46,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:04:46,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 20:04:46,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:04:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 20:04:46,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:46,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075004614] [2022-12-13 20:04:46,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:04:46,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187181130] [2022-12-13 20:04:46,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187181130] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:04:46,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:04:46,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 20:04:46,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009550861] [2022-12-13 20:04:46,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:04:46,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:04:46,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:46,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:04:46,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:04:48,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 702 [2022-12-13 20:04:48,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 212 transitions, 2700 flow. Second operand has 10 states, 10 states have (on average 298.4) internal successors, (2984), 10 states have internal predecessors, (2984), 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 20:04:48,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:04:48,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 702 [2022-12-13 20:04:48,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:05:10,548 INFO L130 PetriNetUnfolder]: 77989/138405 cut-off events. [2022-12-13 20:05:10,548 INFO L131 PetriNetUnfolder]: For 297298/297442 co-relation queries the response was YES. [2022-12-13 20:05:11,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513454 conditions, 138405 events. 77989/138405 cut-off events. For 297298/297442 co-relation queries the response was YES. Maximal size of possible extension queue 4129. Compared 1400054 event pairs, 37032 based on Foata normal form. 144/127680 useless extension candidates. Maximal degree in co-relation 513402. Up to 80879 conditions per place. [2022-12-13 20:05:11,669 INFO L137 encePairwiseOnDemand]: 694/702 looper letters, 226 selfloop transitions, 20 changer transitions 29/277 dead transitions. [2022-12-13 20:05:11,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 277 transitions, 3675 flow [2022-12-13 20:05:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:05:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 20:05:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2451 transitions. [2022-12-13 20:05:11,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43643162393162394 [2022-12-13 20:05:11,672 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2451 transitions. [2022-12-13 20:05:11,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2451 transitions. [2022-12-13 20:05:11,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:05:11,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2451 transitions. [2022-12-13 20:05:11,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 306.375) internal successors, (2451), 8 states have internal predecessors, (2451), 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 20:05:11,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 702.0) internal successors, (6318), 9 states have internal predecessors, (6318), 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 20:05:11,678 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 702.0) internal successors, (6318), 9 states have internal predecessors, (6318), 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 20:05:11,678 INFO L175 Difference]: Start difference. First operand has 154 places, 212 transitions, 2700 flow. Second operand 8 states and 2451 transitions. [2022-12-13 20:05:11,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 277 transitions, 3675 flow [2022-12-13 20:05:13,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 277 transitions, 3644 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 20:05:13,843 INFO L231 Difference]: Finished difference. Result has 159 places, 206 transitions, 2697 flow [2022-12-13 20:05:13,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2697, PETRI_PLACES=159, PETRI_TRANSITIONS=206} [2022-12-13 20:05:13,844 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2022-12-13 20:05:13,844 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 206 transitions, 2697 flow [2022-12-13 20:05:13,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 298.4) internal successors, (2984), 10 states have internal predecessors, (2984), 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 20:05:13,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:05:13,844 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2022-12-13 20:05:13,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-12-13 20:05:14,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 20:05:14,045 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:05:14,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:05:14,046 INFO L85 PathProgramCache]: Analyzing trace with hash 90551464, now seen corresponding path program 2 times [2022-12-13 20:05:14,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:05:14,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544840717] [2022-12-13 20:05:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:14,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:05:14,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:05:14,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594062967] [2022-12-13 20:05:14,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:05:14,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:05:14,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:05:14,072 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:05:14,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 20:05:14,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:05:14,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:05:14,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:05:14,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:05:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 20:05:14,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:05:14,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:05:14,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544840717] [2022-12-13 20:05:14,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:05:14,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594062967] [2022-12-13 20:05:14,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594062967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:05:14,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:05:14,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:05:14,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056451443] [2022-12-13 20:05:14,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:05:14,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:05:14,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:05:14,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:05:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:05:14,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 702 [2022-12-13 20:05:14,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 206 transitions, 2697 flow. Second operand has 4 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 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 20:05:14,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:05:14,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 702 [2022-12-13 20:05:14,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:05:30,717 INFO L130 PetriNetUnfolder]: 62132/112211 cut-off events. [2022-12-13 20:05:30,717 INFO L131 PetriNetUnfolder]: For 354614/364780 co-relation queries the response was YES. [2022-12-13 20:05:31,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416992 conditions, 112211 events. 62132/112211 cut-off events. For 354614/364780 co-relation queries the response was YES. Maximal size of possible extension queue 4289. Compared 1192555 event pairs, 51924 based on Foata normal form. 10193/111811 useless extension candidates. Maximal degree in co-relation 416937. Up to 111285 conditions per place. [2022-12-13 20:05:31,755 INFO L137 encePairwiseOnDemand]: 698/702 looper letters, 172 selfloop transitions, 26 changer transitions 0/204 dead transitions. [2022-12-13 20:05:31,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 204 transitions, 3038 flow [2022-12-13 20:05:31,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:05:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:05:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1247 transitions. [2022-12-13 20:05:31,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4440883190883191 [2022-12-13 20:05:31,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1247 transitions. [2022-12-13 20:05:31,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1247 transitions. [2022-12-13 20:05:31,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:05:31,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1247 transitions. [2022-12-13 20:05:31,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 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 20:05:31,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:05:31,764 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:05:31,764 INFO L175 Difference]: Start difference. First operand has 159 places, 206 transitions, 2697 flow. Second operand 4 states and 1247 transitions. [2022-12-13 20:05:31,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 204 transitions, 3038 flow [2022-12-13 20:05:39,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 204 transitions, 2966 flow, removed 17 selfloop flow, removed 10 redundant places. [2022-12-13 20:05:39,538 INFO L231 Difference]: Finished difference. Result has 142 places, 204 transitions, 2622 flow [2022-12-13 20:05:39,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2570, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2622, PETRI_PLACES=142, PETRI_TRANSITIONS=204} [2022-12-13 20:05:39,538 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2022-12-13 20:05:39,538 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 204 transitions, 2622 flow [2022-12-13 20:05:39,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 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 20:05:39,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:05:39,539 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1] [2022-12-13 20:05:39,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 20:05:39,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 20:05:39,739 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:05:39,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:05:39,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1804313057, now seen corresponding path program 2 times [2022-12-13 20:05:39,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:05:39,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125394749] [2022-12-13 20:05:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:39,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:05:39,796 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:05:39,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763382727] [2022-12-13 20:05:39,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:05:39,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:05:39,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:05:39,799 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:05:39,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 20:05:41,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:05:41,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:05:41,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 20:05:41,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:05:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-13 20:05:49,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:05:49,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:05:49,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125394749] [2022-12-13 20:05:49,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:05:49,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763382727] [2022-12-13 20:05:49,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763382727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:05:49,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:05:49,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:05:49,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425244169] [2022-12-13 20:05:49,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:05:49,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:05:49,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:05:49,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:05:49,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=6, Unknown=1, NotChecked=0, Total=12 [2022-12-13 20:05:51,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:05:53,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:05:55,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:05:58,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:05:58,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 702 [2022-12-13 20:05:58,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 204 transitions, 2622 flow. Second operand has 4 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 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 20:05:58,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:05:58,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 702 [2022-12-13 20:05:58,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:05:59,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:06:21,298 INFO L130 PetriNetUnfolder]: 62132/112210 cut-off events. [2022-12-13 20:06:21,298 INFO L131 PetriNetUnfolder]: For 180595/190761 co-relation queries the response was YES. [2022-12-13 20:06:21,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381766 conditions, 112210 events. 62132/112210 cut-off events. For 180595/190761 co-relation queries the response was YES. Maximal size of possible extension queue 4289. Compared 1192291 event pairs, 51924 based on Foata normal form. 10167/111784 useless extension candidates. Maximal degree in co-relation 381717. Up to 111273 conditions per place. [2022-12-13 20:06:22,183 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 182 selfloop transitions, 15 changer transitions 0/203 dead transitions. [2022-12-13 20:06:22,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 203 transitions, 2989 flow [2022-12-13 20:06:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:06:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:06:22,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1238 transitions. [2022-12-13 20:06:22,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4408831908831909 [2022-12-13 20:06:22,186 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1238 transitions. [2022-12-13 20:06:22,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1238 transitions. [2022-12-13 20:06:22,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:06:22,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1238 transitions. [2022-12-13 20:06:22,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 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 20:06:22,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:06:22,189 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:06:22,190 INFO L175 Difference]: Start difference. First operand has 142 places, 204 transitions, 2622 flow. Second operand 4 states and 1238 transitions. [2022-12-13 20:06:22,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 203 transitions, 2989 flow [2022-12-13 20:06:23,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 203 transitions, 2724 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-12-13 20:06:23,202 INFO L231 Difference]: Finished difference. Result has 131 places, 203 transitions, 2360 flow [2022-12-13 20:06:23,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2360, PETRI_PLACES=131, PETRI_TRANSITIONS=203} [2022-12-13 20:06:23,202 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2022-12-13 20:06:23,202 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 203 transitions, 2360 flow [2022-12-13 20:06:23,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 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 20:06:23,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:06:23,202 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:06:23,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-12-13 20:06:23,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 20:06:23,404 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:06:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:06:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2073225222, now seen corresponding path program 1 times [2022-12-13 20:06:23,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:06:23,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217361467] [2022-12-13 20:06:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:23,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:06:23,422 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:06:23,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91924058] [2022-12-13 20:06:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:23,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:06:23,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:06:23,423 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:06:23,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 20:06:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:23,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:06:23,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:06:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:06:23,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:06:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:06:23,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:06:23,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217361467] [2022-12-13 20:06:23,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:06:23,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91924058] [2022-12-13 20:06:23,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91924058] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:06:23,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:06:23,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 20:06:23,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259323995] [2022-12-13 20:06:23,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:06:23,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 20:06:23,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:06:23,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 20:06:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:06:24,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 702 [2022-12-13 20:06:24,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 203 transitions, 2360 flow. Second operand has 11 states, 11 states have (on average 289.09090909090907) internal successors, (3180), 11 states have internal predecessors, (3180), 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 20:06:24,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:06:24,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 702 [2022-12-13 20:06:24,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:06:42,969 INFO L130 PetriNetUnfolder]: 84157/151457 cut-off events. [2022-12-13 20:06:42,970 INFO L131 PetriNetUnfolder]: For 248482/262436 co-relation queries the response was YES. [2022-12-13 20:06:43,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511681 conditions, 151457 events. 84157/151457 cut-off events. For 248482/262436 co-relation queries the response was YES. Maximal size of possible extension queue 5521. Compared 1650719 event pairs, 33568 based on Foata normal form. 20203/159952 useless extension candidates. Maximal degree in co-relation 511642. Up to 59303 conditions per place. [2022-12-13 20:06:43,980 INFO L137 encePairwiseOnDemand]: 689/702 looper letters, 294 selfloop transitions, 138 changer transitions 18/456 dead transitions. [2022-12-13 20:06:43,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 456 transitions, 4931 flow [2022-12-13 20:06:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 20:06:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 20:06:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4790 transitions. [2022-12-13 20:06:43,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42646011396011396 [2022-12-13 20:06:43,985 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4790 transitions. [2022-12-13 20:06:43,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4790 transitions. [2022-12-13 20:06:43,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:06:43,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4790 transitions. [2022-12-13 20:06:43,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 299.375) internal successors, (4790), 16 states have internal predecessors, (4790), 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 20:06:43,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 702.0) internal successors, (11934), 17 states have internal predecessors, (11934), 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 20:06:43,996 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 702.0) internal successors, (11934), 17 states have internal predecessors, (11934), 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 20:06:43,996 INFO L175 Difference]: Start difference. First operand has 131 places, 203 transitions, 2360 flow. Second operand 16 states and 4790 transitions. [2022-12-13 20:06:43,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 456 transitions, 4931 flow [2022-12-13 20:06:46,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 456 transitions, 4915 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:06:46,115 INFO L231 Difference]: Finished difference. Result has 152 places, 261 transitions, 3453 flow [2022-12-13 20:06:46,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3453, PETRI_PLACES=152, PETRI_TRANSITIONS=261} [2022-12-13 20:06:46,115 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2022-12-13 20:06:46,115 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 261 transitions, 3453 flow [2022-12-13 20:06:46,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 289.09090909090907) internal successors, (3180), 11 states have internal predecessors, (3180), 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 20:06:46,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:06:46,116 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:06:46,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-12-13 20:06:46,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 20:06:46,317 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:06:46,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:06:46,318 INFO L85 PathProgramCache]: Analyzing trace with hash -562487898, now seen corresponding path program 2 times [2022-12-13 20:06:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:06:46,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238520459] [2022-12-13 20:06:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:46,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:06:46,356 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:06:46,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607604836] [2022-12-13 20:06:46,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:06:46,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:06:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:06:46,360 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:06:46,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 20:06:46,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:06:46,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:06:46,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:06:46,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:06:46,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:06:46,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:06:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:06:46,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:06:46,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238520459] [2022-12-13 20:06:46,506 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:06:46,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607604836] [2022-12-13 20:06:46,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607604836] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:06:46,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:06:46,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2022-12-13 20:06:46,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269886992] [2022-12-13 20:06:46,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:06:46,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:06:46,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:06:46,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:06:46,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:06:46,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 702 [2022-12-13 20:06:46,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 261 transitions, 3453 flow. Second operand has 4 states, 4 states have (on average 306.5) internal successors, (1226), 4 states have internal predecessors, (1226), 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 20:06:46,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:06:46,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 702 [2022-12-13 20:06:46,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:07:07,450 INFO L130 PetriNetUnfolder]: 82024/146754 cut-off events. [2022-12-13 20:07:07,450 INFO L131 PetriNetUnfolder]: For 358540/371760 co-relation queries the response was YES. [2022-12-13 20:07:08,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571894 conditions, 146754 events. 82024/146754 cut-off events. For 358540/371760 co-relation queries the response was YES. Maximal size of possible extension queue 4974. Compared 1569522 event pairs, 16376 based on Foata normal form. 13220/153682 useless extension candidates. Maximal degree in co-relation 571847. Up to 102895 conditions per place. [2022-12-13 20:07:08,551 INFO L137 encePairwiseOnDemand]: 697/702 looper letters, 181 selfloop transitions, 19 changer transitions 67/270 dead transitions. [2022-12-13 20:07:08,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 270 transitions, 4056 flow [2022-12-13 20:07:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:07:08,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:07:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1256 transitions. [2022-12-13 20:07:08,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2022-12-13 20:07:08,553 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1256 transitions. [2022-12-13 20:07:08,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1256 transitions. [2022-12-13 20:07:08,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:07:08,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1256 transitions. [2022-12-13 20:07:08,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 20:07:08,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:07:08,556 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:07:08,556 INFO L175 Difference]: Start difference. First operand has 152 places, 261 transitions, 3453 flow. Second operand 4 states and 1256 transitions. [2022-12-13 20:07:08,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 270 transitions, 4056 flow [2022-12-13 20:07:16,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 270 transitions, 3980 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-12-13 20:07:16,970 INFO L231 Difference]: Finished difference. Result has 152 places, 188 transitions, 2356 flow [2022-12-13 20:07:16,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=3339, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2356, PETRI_PLACES=152, PETRI_TRANSITIONS=188} [2022-12-13 20:07:16,971 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2022-12-13 20:07:16,971 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 188 transitions, 2356 flow [2022-12-13 20:07:16,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 306.5) internal successors, (1226), 4 states have internal predecessors, (1226), 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 20:07:16,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:07:16,972 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:07:16,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-13 20:07:17,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:17,173 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:07:17,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:07:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash 386818384, now seen corresponding path program 2 times [2022-12-13 20:07:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:07:17,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019950757] [2022-12-13 20:07:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:07:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:07:17,212 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:07:17,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971429842] [2022-12-13 20:07:17,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:07:17,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:17,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:07:17,214 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:07:17,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 20:07:17,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:07:17,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:07:17,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:07:17,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:07:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:07:17,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:07:17,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:07:17,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019950757] [2022-12-13 20:07:17,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:07:17,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971429842] [2022-12-13 20:07:17,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971429842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:07:17,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:07:17,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:07:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022767875] [2022-12-13 20:07:17,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:07:17,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:07:17,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:07:17,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:07:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:07:17,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 702 [2022-12-13 20:07:17,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 188 transitions, 2356 flow. Second operand has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 20:07:17,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:07:17,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 702 [2022-12-13 20:07:17,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:07:33,809 INFO L130 PetriNetUnfolder]: 67771/120001 cut-off events. [2022-12-13 20:07:33,809 INFO L131 PetriNetUnfolder]: For 310191/321029 co-relation queries the response was YES. [2022-12-13 20:07:34,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470716 conditions, 120001 events. 67771/120001 cut-off events. For 310191/321029 co-relation queries the response was YES. Maximal size of possible extension queue 4237. Compared 1241837 event pairs, 34221 based on Foata normal form. 12134/126104 useless extension candidates. Maximal degree in co-relation 470668. Up to 76660 conditions per place. [2022-12-13 20:07:34,772 INFO L137 encePairwiseOnDemand]: 698/702 looper letters, 199 selfloop transitions, 8 changer transitions 0/210 dead transitions. [2022-12-13 20:07:34,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 210 transitions, 2919 flow [2022-12-13 20:07:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:07:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:07:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1269 transitions. [2022-12-13 20:07:34,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2022-12-13 20:07:34,774 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1269 transitions. [2022-12-13 20:07:34,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1269 transitions. [2022-12-13 20:07:34,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:07:34,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1269 transitions. [2022-12-13 20:07:34,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 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 20:07:34,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:07:34,778 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:07:34,778 INFO L175 Difference]: Start difference. First operand has 152 places, 188 transitions, 2356 flow. Second operand 4 states and 1269 transitions. [2022-12-13 20:07:34,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 210 transitions, 2919 flow [2022-12-13 20:07:37,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 210 transitions, 2508 flow, removed 32 selfloop flow, removed 14 redundant places. [2022-12-13 20:07:37,771 INFO L231 Difference]: Finished difference. Result has 135 places, 188 transitions, 1992 flow [2022-12-13 20:07:37,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1992, PETRI_PLACES=135, PETRI_TRANSITIONS=188} [2022-12-13 20:07:37,771 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 82 predicate places. [2022-12-13 20:07:37,772 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 188 transitions, 1992 flow [2022-12-13 20:07:37,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 20:07:37,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:07:37,772 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:07:37,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-13 20:07:37,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:37,973 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:07:37,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:07:37,974 INFO L85 PathProgramCache]: Analyzing trace with hash -840839703, now seen corresponding path program 1 times [2022-12-13 20:07:37,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:07:37,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687108392] [2022-12-13 20:07:37,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:07:37,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:07:38,013 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:07:38,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736342300] [2022-12-13 20:07:38,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:07:38,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:38,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:07:38,015 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:07:38,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 20:07:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:07:38,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:07:38,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:07:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:07:38,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:07:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:07:38,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:07:38,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687108392] [2022-12-13 20:07:38,204 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:07:38,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736342300] [2022-12-13 20:07:38,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736342300] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 20:07:38,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:07:38,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-13 20:07:38,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607724170] [2022-12-13 20:07:38,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:07:38,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:07:38,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:07:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:07:38,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:07:38,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 702 [2022-12-13 20:07:38,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 188 transitions, 1992 flow. Second operand has 5 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 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 20:07:38,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:07:38,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 702 [2022-12-13 20:07:38,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:07:52,274 INFO L130 PetriNetUnfolder]: 55195/100716 cut-off events. [2022-12-13 20:07:52,274 INFO L131 PetriNetUnfolder]: For 178786/188122 co-relation queries the response was YES. [2022-12-13 20:07:52,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353843 conditions, 100716 events. 55195/100716 cut-off events. For 178786/188122 co-relation queries the response was YES. Maximal size of possible extension queue 3424. Compared 1060658 event pairs, 15085 based on Foata normal form. 13560/107238 useless extension candidates. Maximal degree in co-relation 353802. Up to 62268 conditions per place. [2022-12-13 20:07:52,971 INFO L137 encePairwiseOnDemand]: 690/702 looper letters, 172 selfloop transitions, 19 changer transitions 0/196 dead transitions. [2022-12-13 20:07:52,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 196 transitions, 2408 flow [2022-12-13 20:07:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:07:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:07:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1481 transitions. [2022-12-13 20:07:52,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4219373219373219 [2022-12-13 20:07:52,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1481 transitions. [2022-12-13 20:07:52,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1481 transitions. [2022-12-13 20:07:52,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:07:52,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1481 transitions. [2022-12-13 20:07:52,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.2) internal successors, (1481), 5 states have internal predecessors, (1481), 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 20:07:52,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 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 20:07:52,978 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 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 20:07:52,978 INFO L175 Difference]: Start difference. First operand has 135 places, 188 transitions, 1992 flow. Second operand 5 states and 1481 transitions. [2022-12-13 20:07:52,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 196 transitions, 2408 flow [2022-12-13 20:07:53,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 196 transitions, 2388 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 20:07:53,954 INFO L231 Difference]: Finished difference. Result has 135 places, 185 transitions, 2033 flow [2022-12-13 20:07:53,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1911, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2033, PETRI_PLACES=135, PETRI_TRANSITIONS=185} [2022-12-13 20:07:53,955 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 82 predicate places. [2022-12-13 20:07:53,955 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 185 transitions, 2033 flow [2022-12-13 20:07:53,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 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 20:07:53,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:07:53,955 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:07:53,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-13 20:07:54,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:54,156 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:07:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:07:54,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1929730898, now seen corresponding path program 1 times [2022-12-13 20:07:54,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:07:54,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203213944] [2022-12-13 20:07:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:07:54,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:07:54,203 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:07:54,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544314681] [2022-12-13 20:07:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:07:54,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:54,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:07:54,206 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:07:54,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 20:07:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:07:54,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:07:54,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:07:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:07:54,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:07:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:07:54,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:07:54,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203213944] [2022-12-13 20:07:54,365 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:07:54,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544314681] [2022-12-13 20:07:54,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544314681] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:07:54,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:07:54,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-12-13 20:07:54,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700112006] [2022-12-13 20:07:54,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:07:54,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:07:54,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:07:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:07:54,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:07:54,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 702 [2022-12-13 20:07:54,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 185 transitions, 2033 flow. Second operand has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 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 20:07:54,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:07:54,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 702 [2022-12-13 20:07:54,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:08:20,467 INFO L130 PetriNetUnfolder]: 104767/186495 cut-off events. [2022-12-13 20:08:20,467 INFO L131 PetriNetUnfolder]: For 401437/418549 co-relation queries the response was YES. [2022-12-13 20:08:21,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752605 conditions, 186495 events. 104767/186495 cut-off events. For 401437/418549 co-relation queries the response was YES. Maximal size of possible extension queue 4720. Compared 1979738 event pairs, 21216 based on Foata normal form. 23916/202320 useless extension candidates. Maximal degree in co-relation 752564. Up to 47945 conditions per place. [2022-12-13 20:08:21,850 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 249 selfloop transitions, 15 changer transitions 0/269 dead transitions. [2022-12-13 20:08:21,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 269 transitions, 3141 flow [2022-12-13 20:08:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:08:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:08:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1953 transitions. [2022-12-13 20:08:21,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4636752136752137 [2022-12-13 20:08:21,853 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1953 transitions. [2022-12-13 20:08:21,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1953 transitions. [2022-12-13 20:08:21,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:08:21,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1953 transitions. [2022-12-13 20:08:21,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 325.5) internal successors, (1953), 6 states have internal predecessors, (1953), 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 20:08:21,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 702.0) internal successors, (4914), 7 states have internal predecessors, (4914), 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 20:08:21,858 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 702.0) internal successors, (4914), 7 states have internal predecessors, (4914), 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 20:08:21,858 INFO L175 Difference]: Start difference. First operand has 135 places, 185 transitions, 2033 flow. Second operand 6 states and 1953 transitions. [2022-12-13 20:08:21,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 269 transitions, 3141 flow [2022-12-13 20:08:26,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 269 transitions, 3085 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-13 20:08:26,195 INFO L231 Difference]: Finished difference. Result has 142 places, 191 transitions, 2103 flow [2022-12-13 20:08:26,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2103, PETRI_PLACES=142, PETRI_TRANSITIONS=191} [2022-12-13 20:08:26,195 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2022-12-13 20:08:26,195 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 191 transitions, 2103 flow [2022-12-13 20:08:26,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 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 20:08:26,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:08:26,196 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:08:26,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-12-13 20:08:26,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:08:26,396 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:08:26,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:08:26,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1791010021, now seen corresponding path program 1 times [2022-12-13 20:08:26,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:08:26,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792320903] [2022-12-13 20:08:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:08:26,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:08:26,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:08:26,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373453685] [2022-12-13 20:08:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:08:26,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:08:26,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:08:26,447 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:08:26,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 20:08:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:26,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 20:08:26,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:08:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:08:27,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:08:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:08:27,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:08:27,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792320903] [2022-12-13 20:08:27,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:08:27,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373453685] [2022-12-13 20:08:27,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373453685] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 20:08:27,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:08:27,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-12-13 20:08:27,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325678397] [2022-12-13 20:08:27,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:08:27,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:08:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:08:27,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:08:27,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:08:27,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 702 [2022-12-13 20:08:27,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 191 transitions, 2103 flow. Second operand has 8 states, 8 states have (on average 283.375) internal successors, (2267), 8 states have internal predecessors, (2267), 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 20:08:27,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:08:27,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 702 [2022-12-13 20:08:27,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:08:53,378 INFO L130 PetriNetUnfolder]: 105739/188515 cut-off events. [2022-12-13 20:08:53,378 INFO L131 PetriNetUnfolder]: For 429750/447514 co-relation queries the response was YES. [2022-12-13 20:08:54,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749218 conditions, 188515 events. 105739/188515 cut-off events. For 429750/447514 co-relation queries the response was YES. Maximal size of possible extension queue 4763. Compared 2006687 event pairs, 90859 based on Foata normal form. 17774/198258 useless extension candidates. Maximal degree in co-relation 749173. Up to 184881 conditions per place. [2022-12-13 20:08:54,894 INFO L137 encePairwiseOnDemand]: 694/702 looper letters, 124 selfloop transitions, 91 changer transitions 3/223 dead transitions. [2022-12-13 20:08:54,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 223 transitions, 2761 flow [2022-12-13 20:08:54,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:08:54,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 20:08:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2582 transitions. [2022-12-13 20:08:54,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4086736308958531 [2022-12-13 20:08:54,898 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2582 transitions. [2022-12-13 20:08:54,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2582 transitions. [2022-12-13 20:08:54,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:08:54,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2582 transitions. [2022-12-13 20:08:54,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 286.8888888888889) internal successors, (2582), 9 states have internal predecessors, (2582), 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 20:08:54,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 702.0) internal successors, (7020), 10 states have internal predecessors, (7020), 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 20:08:54,905 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 702.0) internal successors, (7020), 10 states have internal predecessors, (7020), 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 20:08:54,905 INFO L175 Difference]: Start difference. First operand has 142 places, 191 transitions, 2103 flow. Second operand 9 states and 2582 transitions. [2022-12-13 20:08:54,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 223 transitions, 2761 flow [2022-12-13 20:09:08,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 223 transitions, 2733 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 20:09:08,439 INFO L231 Difference]: Finished difference. Result has 150 places, 193 transitions, 2369 flow [2022-12-13 20:09:08,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2369, PETRI_PLACES=150, PETRI_TRANSITIONS=193} [2022-12-13 20:09:08,439 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 97 predicate places. [2022-12-13 20:09:08,440 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 193 transitions, 2369 flow [2022-12-13 20:09:08,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 283.375) internal successors, (2267), 8 states have internal predecessors, (2267), 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 20:09:08,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:08,440 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:09:08,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 20:09:08,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:08,641 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:09:08,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:08,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1381477897, now seen corresponding path program 1 times [2022-12-13 20:09:08,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:08,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346120604] [2022-12-13 20:09:08,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:08,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:08,664 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:09:08,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820680466] [2022-12-13 20:09:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:08,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:08,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:09:08,665 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:09:08,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-13 20:09:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:08,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:09:08,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:09:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 20:09:08,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:09:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 20:09:08,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:08,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346120604] [2022-12-13 20:09:08,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:09:08,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820680466] [2022-12-13 20:09:08,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820680466] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 20:09:08,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:09:08,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-13 20:09:08,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569821418] [2022-12-13 20:09:08,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:09:08,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:09:08,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:08,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:09:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:09:08,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 702 [2022-12-13 20:09:08,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 193 transitions, 2369 flow. Second operand has 5 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 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 20:09:08,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:09:08,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 702 [2022-12-13 20:09:08,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:09:30,955 INFO L130 PetriNetUnfolder]: 91325/160062 cut-off events. [2022-12-13 20:09:30,955 INFO L131 PetriNetUnfolder]: For 337600/346674 co-relation queries the response was YES. [2022-12-13 20:09:31,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625069 conditions, 160062 events. 91325/160062 cut-off events. For 337600/346674 co-relation queries the response was YES. Maximal size of possible extension queue 3966. Compared 1629740 event pairs, 78250 based on Foata normal form. 9076/162378 useless extension candidates. Maximal degree in co-relation 625022. Up to 157545 conditions per place. [2022-12-13 20:09:32,230 INFO L137 encePairwiseOnDemand]: 695/702 looper letters, 168 selfloop transitions, 16 changer transitions 0/189 dead transitions. [2022-12-13 20:09:32,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 189 transitions, 2319 flow [2022-12-13 20:09:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:09:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:09:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1507 transitions. [2022-12-13 20:09:32,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42934472934472934 [2022-12-13 20:09:32,233 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1507 transitions. [2022-12-13 20:09:32,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1507 transitions. [2022-12-13 20:09:32,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:09:32,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1507 transitions. [2022-12-13 20:09:32,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.4) internal successors, (1507), 5 states have internal predecessors, (1507), 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 20:09:32,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 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 20:09:32,239 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 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 20:09:32,239 INFO L175 Difference]: Start difference. First operand has 150 places, 193 transitions, 2369 flow. Second operand 5 states and 1507 transitions. [2022-12-13 20:09:32,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 189 transitions, 2319 flow [2022-12-13 20:09:41,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 189 transitions, 2188 flow, removed 31 selfloop flow, removed 8 redundant places. [2022-12-13 20:09:41,823 INFO L231 Difference]: Finished difference. Result has 145 places, 163 transitions, 1713 flow [2022-12-13 20:09:41,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1713, PETRI_PLACES=145, PETRI_TRANSITIONS=163} [2022-12-13 20:09:41,824 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2022-12-13 20:09:41,824 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 163 transitions, 1713 flow [2022-12-13 20:09:41,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 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 20:09:41,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:41,824 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:09:41,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-12-13 20:09:42,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 20:09:42,025 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:09:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash 276173810, now seen corresponding path program 1 times [2022-12-13 20:09:42,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:42,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986687747] [2022-12-13 20:09:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:42,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:42,078 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:09:42,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708699621] [2022-12-13 20:09:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:42,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:42,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:09:42,081 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:09:42,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-13 20:09:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:42,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 20:09:42,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:09:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:09:42,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:09:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:09:42,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:42,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986687747] [2022-12-13 20:09:42,642 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:09:42,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708699621] [2022-12-13 20:09:42,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708699621] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:09:42,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:09:42,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-12-13 20:09:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227754621] [2022-12-13 20:09:42,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:09:42,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 20:09:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:09:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:09:47,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 702 [2022-12-13 20:09:47,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 163 transitions, 1713 flow. Second operand has 12 states, 12 states have (on average 289.1666666666667) internal successors, (3470), 12 states have internal predecessors, (3470), 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 20:09:47,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:09:47,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 702 [2022-12-13 20:09:47,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:15,804 INFO L130 PetriNetUnfolder]: 115433/201807 cut-off events. [2022-12-13 20:10:15,804 INFO L131 PetriNetUnfolder]: For 433121/444431 co-relation queries the response was YES. [2022-12-13 20:10:16,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774354 conditions, 201807 events. 115433/201807 cut-off events. For 433121/444431 co-relation queries the response was YES. Maximal size of possible extension queue 5072. Compared 2096688 event pairs, 11862 based on Foata normal form. 11310/211061 useless extension candidates. Maximal degree in co-relation 774310. Up to 57510 conditions per place. [2022-12-13 20:10:17,619 INFO L137 encePairwiseOnDemand]: 693/702 looper letters, 237 selfloop transitions, 65 changer transitions 10/315 dead transitions. [2022-12-13 20:10:17,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 315 transitions, 3264 flow [2022-12-13 20:10:17,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 20:10:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 20:10:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3856 transitions. [2022-12-13 20:10:17,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4225290379136533 [2022-12-13 20:10:17,626 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3856 transitions. [2022-12-13 20:10:17,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3856 transitions. [2022-12-13 20:10:17,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:17,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3856 transitions. [2022-12-13 20:10:17,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 296.61538461538464) internal successors, (3856), 13 states have internal predecessors, (3856), 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 20:10:17,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 702.0) internal successors, (9828), 14 states have internal predecessors, (9828), 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 20:10:17,640 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 702.0) internal successors, (9828), 14 states have internal predecessors, (9828), 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 20:10:17,640 INFO L175 Difference]: Start difference. First operand has 145 places, 163 transitions, 1713 flow. Second operand 13 states and 3856 transitions. [2022-12-13 20:10:17,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 315 transitions, 3264 flow [2022-12-13 20:10:31,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 315 transitions, 3259 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 20:10:31,751 INFO L231 Difference]: Finished difference. Result has 161 places, 172 transitions, 1955 flow [2022-12-13 20:10:31,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1955, PETRI_PLACES=161, PETRI_TRANSITIONS=172} [2022-12-13 20:10:31,752 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 108 predicate places. [2022-12-13 20:10:31,752 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 172 transitions, 1955 flow [2022-12-13 20:10:31,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 289.1666666666667) internal successors, (3470), 12 states have internal predecessors, (3470), 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 20:10:31,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:31,752 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:31,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-12-13 20:10:31,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 20:10:31,954 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:10:31,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:31,955 INFO L85 PathProgramCache]: Analyzing trace with hash 276173809, now seen corresponding path program 1 times [2022-12-13 20:10:31,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:31,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088010428] [2022-12-13 20:10:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:31,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:31,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:10:31,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497534022] [2022-12-13 20:10:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:31,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:10:31,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:31,973 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:10:31,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-13 20:10:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:32,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:10:32,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:10:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:10:32,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:10:32,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:32,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088010428] [2022-12-13 20:10:32,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:10:32,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497534022] [2022-12-13 20:10:32,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497534022] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:32,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:32,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:10:32,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331900817] [2022-12-13 20:10:32,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:32,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:10:32,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:32,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:10:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:10:32,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 702 [2022-12-13 20:10:32,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 172 transitions, 1955 flow. Second operand has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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 20:10:32,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:32,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 702 [2022-12-13 20:10:32,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:57,706 INFO L130 PetriNetUnfolder]: 106058/187290 cut-off events. [2022-12-13 20:10:57,706 INFO L131 PetriNetUnfolder]: For 499913/510537 co-relation queries the response was YES. [2022-12-13 20:10:58,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745598 conditions, 187290 events. 106058/187290 cut-off events. For 499913/510537 co-relation queries the response was YES. Maximal size of possible extension queue 4712. Compared 1950406 event pairs, 1872 based on Foata normal form. 18310/204354 useless extension candidates. Maximal degree in co-relation 745549. Up to 120120 conditions per place. [2022-12-13 20:10:59,197 INFO L137 encePairwiseOnDemand]: 698/702 looper letters, 154 selfloop transitions, 4 changer transitions 42/203 dead transitions. [2022-12-13 20:10:59,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 203 transitions, 2532 flow [2022-12-13 20:10:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:10:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:10:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1579 transitions. [2022-12-13 20:10:59,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44985754985754983 [2022-12-13 20:10:59,199 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1579 transitions. [2022-12-13 20:10:59,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1579 transitions. [2022-12-13 20:10:59,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:59,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1579 transitions. [2022-12-13 20:10:59,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 315.8) internal successors, (1579), 5 states have internal predecessors, (1579), 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 20:10:59,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 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 20:10:59,203 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 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 20:10:59,203 INFO L175 Difference]: Start difference. First operand has 161 places, 172 transitions, 1955 flow. Second operand 5 states and 1579 transitions. [2022-12-13 20:10:59,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 203 transitions, 2532 flow [2022-12-13 20:11:13,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 203 transitions, 2454 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-12-13 20:11:13,618 INFO L231 Difference]: Finished difference. Result has 158 places, 126 transitions, 1303 flow [2022-12-13 20:11:13,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1303, PETRI_PLACES=158, PETRI_TRANSITIONS=126} [2022-12-13 20:11:13,618 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 105 predicate places. [2022-12-13 20:11:13,618 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 126 transitions, 1303 flow [2022-12-13 20:11:13,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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 20:11:13,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:11:13,619 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:11:13,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-12-13 20:11:13,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:13,820 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:11:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:11:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash 883286225, now seen corresponding path program 1 times [2022-12-13 20:11:13,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:11:13,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993920422] [2022-12-13 20:11:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:11:13,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:11:13,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684616006] [2022-12-13 20:11:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:13,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:13,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:11:13,868 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:11:13,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-13 20:11:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:14,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:11:14,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:11:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 20:11:14,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:11:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 20:11:14,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:11:14,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993920422] [2022-12-13 20:11:14,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:11:14,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684616006] [2022-12-13 20:11:14,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684616006] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 20:11:14,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:11:14,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-13 20:11:14,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124239889] [2022-12-13 20:11:14,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:11:14,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:11:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:11:14,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:11:14,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:11:14,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 702 [2022-12-13 20:11:14,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 126 transitions, 1303 flow. Second operand has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 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 20:11:14,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:11:14,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 702 [2022-12-13 20:11:14,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:11:29,099 INFO L130 PetriNetUnfolder]: 66217/113490 cut-off events. [2022-12-13 20:11:29,099 INFO L131 PetriNetUnfolder]: For 385943/385943 co-relation queries the response was YES. [2022-12-13 20:11:29,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483926 conditions, 113490 events. 66217/113490 cut-off events. For 385943/385943 co-relation queries the response was YES. Maximal size of possible extension queue 2311. Compared 1051081 event pairs, 31104 based on Foata normal form. 6804/119565 useless extension candidates. Maximal degree in co-relation 483878. Up to 66117 conditions per place. [2022-12-13 20:11:30,073 INFO L137 encePairwiseOnDemand]: 694/702 looper letters, 162 selfloop transitions, 10 changer transitions 0/174 dead transitions. [2022-12-13 20:11:30,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 174 transitions, 1986 flow [2022-12-13 20:11:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:11:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:11:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1500 transitions. [2022-12-13 20:11:30,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2022-12-13 20:11:30,076 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1500 transitions. [2022-12-13 20:11:30,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1500 transitions. [2022-12-13 20:11:30,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:11:30,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1500 transitions. [2022-12-13 20:11:30,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 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 20:11:30,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 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 20:11:30,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 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 20:11:30,079 INFO L175 Difference]: Start difference. First operand has 158 places, 126 transitions, 1303 flow. Second operand 5 states and 1500 transitions. [2022-12-13 20:11:30,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 174 transitions, 1986 flow [2022-12-13 20:11:44,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 174 transitions, 1909 flow, removed 27 selfloop flow, removed 11 redundant places. [2022-12-13 20:11:44,300 INFO L231 Difference]: Finished difference. Result has 139 places, 126 transitions, 1285 flow [2022-12-13 20:11:44,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1285, PETRI_PLACES=139, PETRI_TRANSITIONS=126} [2022-12-13 20:11:44,300 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2022-12-13 20:11:44,300 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 126 transitions, 1285 flow [2022-12-13 20:11:44,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 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 20:11:44,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:11:44,300 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:11:44,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-12-13 20:11:44,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:44,501 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:11:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:11:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1546474150, now seen corresponding path program 2 times [2022-12-13 20:11:44,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:11:44,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528206610] [2022-12-13 20:11:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:44,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:11:44,518 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:11:44,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963014468] [2022-12-13 20:11:44,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:11:44,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:44,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:11:44,519 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:11:44,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-12-13 20:11:44,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:11:44,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:11:44,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:11:44,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:11:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 20:11:44,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:11:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 20:11:44,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:11:44,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528206610] [2022-12-13 20:11:44,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:11:44,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963014468] [2022-12-13 20:11:44,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963014468] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:11:44,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:11:44,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2022-12-13 20:11:44,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833821635] [2022-12-13 20:11:44,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:11:44,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:11:44,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:11:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:11:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:11:44,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 702 [2022-12-13 20:11:44,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 126 transitions, 1285 flow. Second operand has 4 states, 4 states have (on average 309.25) internal successors, (1237), 4 states have internal predecessors, (1237), 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 20:11:44,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:11:44,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 702 [2022-12-13 20:11:44,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:11:56,465 INFO L130 PetriNetUnfolder]: 52861/91674 cut-off events. [2022-12-13 20:11:56,465 INFO L131 PetriNetUnfolder]: For 312383/325496 co-relation queries the response was YES. [2022-12-13 20:11:56,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367974 conditions, 91674 events. 52861/91674 cut-off events. For 312383/325496 co-relation queries the response was YES. Maximal size of possible extension queue 2239. Compared 850252 event pairs, 20196 based on Foata normal form. 14553/105291 useless extension candidates. Maximal degree in co-relation 367932. Up to 48951 conditions per place. [2022-12-13 20:11:57,111 INFO L137 encePairwiseOnDemand]: 696/702 looper letters, 108 selfloop transitions, 13 changer transitions 12/136 dead transitions. [2022-12-13 20:11:57,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 136 transitions, 1609 flow [2022-12-13 20:11:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:11:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:11:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1257 transitions. [2022-12-13 20:11:57,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44764957264957267 [2022-12-13 20:11:57,114 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1257 transitions. [2022-12-13 20:11:57,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1257 transitions. [2022-12-13 20:11:57,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:11:57,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1257 transitions. [2022-12-13 20:11:57,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 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 20:11:57,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:11:57,117 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 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 20:11:57,117 INFO L175 Difference]: Start difference. First operand has 139 places, 126 transitions, 1285 flow. Second operand 4 states and 1257 transitions. [2022-12-13 20:11:57,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 136 transitions, 1609 flow [2022-12-13 20:11:58,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 136 transitions, 1575 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-12-13 20:11:58,487 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 1138 flow [2022-12-13 20:11:58,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1138, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2022-12-13 20:11:58,487 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 81 predicate places. [2022-12-13 20:11:58,487 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 1138 flow [2022-12-13 20:11:58,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.25) internal successors, (1237), 4 states have internal predecessors, (1237), 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 20:11:58,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:11:58,488 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:11:58,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-12-13 20:11:58,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 20:11:58,689 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:11:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:11:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1207457433, now seen corresponding path program 1 times [2022-12-13 20:11:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:11:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572412489] [2022-12-13 20:11:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:11:58,713 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:11:58,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881378509] [2022-12-13 20:11:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:58,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:58,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:11:58,715 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:11:58,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-12-13 20:11:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:58,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:11:58,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:11:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 20:11:58,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:11:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 20:11:58,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:11:58,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572412489] [2022-12-13 20:11:58,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:11:58,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881378509] [2022-12-13 20:11:58,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881378509] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:11:58,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:11:58,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-12-13 20:11:58,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885498865] [2022-12-13 20:11:58,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:11:58,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:11:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:11:58,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:11:58,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:11:59,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 702 [2022-12-13 20:11:59,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 1138 flow. Second operand has 9 states, 9 states have (on average 302.3333333333333) internal successors, (2721), 9 states have internal predecessors, (2721), 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 20:11:59,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:11:59,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 702 [2022-12-13 20:11:59,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:08,439 INFO L130 PetriNetUnfolder]: 44499/75658 cut-off events. [2022-12-13 20:12:08,439 INFO L131 PetriNetUnfolder]: For 234329/242456 co-relation queries the response was YES. [2022-12-13 20:12:08,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318881 conditions, 75658 events. 44499/75658 cut-off events. For 234329/242456 co-relation queries the response was YES. Maximal size of possible extension queue 1971. Compared 669424 event pairs, 6399 based on Foata normal form. 11097/86512 useless extension candidates. Maximal degree in co-relation 318843. Up to 39177 conditions per place. [2022-12-13 20:12:08,951 INFO L137 encePairwiseOnDemand]: 695/702 looper letters, 133 selfloop transitions, 31 changer transitions 0/166 dead transitions. [2022-12-13 20:12:08,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 166 transitions, 1890 flow [2022-12-13 20:12:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:12:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 20:12:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2438 transitions. [2022-12-13 20:12:08,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4341168091168091 [2022-12-13 20:12:08,955 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2438 transitions. [2022-12-13 20:12:08,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2438 transitions. [2022-12-13 20:12:08,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:08,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2438 transitions. [2022-12-13 20:12:08,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 304.75) internal successors, (2438), 8 states have internal predecessors, (2438), 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 20:12:08,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 702.0) internal successors, (6318), 9 states have internal predecessors, (6318), 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 20:12:08,960 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 702.0) internal successors, (6318), 9 states have internal predecessors, (6318), 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 20:12:08,960 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 1138 flow. Second operand 8 states and 2438 transitions. [2022-12-13 20:12:08,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 166 transitions, 1890 flow [2022-12-13 20:12:10,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 166 transitions, 1645 flow, removed 11 selfloop flow, removed 17 redundant places. [2022-12-13 20:12:10,215 INFO L231 Difference]: Finished difference. Result has 118 places, 127 transitions, 1225 flow [2022-12-13 20:12:10,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1225, PETRI_PLACES=118, PETRI_TRANSITIONS=127} [2022-12-13 20:12:10,215 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2022-12-13 20:12:10,215 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 127 transitions, 1225 flow [2022-12-13 20:12:10,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 302.3333333333333) internal successors, (2721), 9 states have internal predecessors, (2721), 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 20:12:10,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:10,216 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:12:10,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-12-13 20:12:10,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 20:12:10,417 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:12:10,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash 13926563, now seen corresponding path program 1 times [2022-12-13 20:12:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:10,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196856271] [2022-12-13 20:12:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:10,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:10,441 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:10,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143413574] [2022-12-13 20:12:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:10,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:10,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:10,442 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:10,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-13 20:12:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:10,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:12:10,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 20:12:10,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:12:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 20:12:10,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:10,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196856271] [2022-12-13 20:12:10,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:10,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143413574] [2022-12-13 20:12:10,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143413574] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:12:10,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:12:10,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 20:12:10,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371668545] [2022-12-13 20:12:10,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:12:10,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 20:12:10,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 20:12:10,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:12:11,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 702 [2022-12-13 20:12:11,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 127 transitions, 1225 flow. Second operand has 11 states, 11 states have (on average 290.0) internal successors, (3190), 11 states have internal predecessors, (3190), 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 20:12:11,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:11,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 702 [2022-12-13 20:12:11,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:19,617 INFO L130 PetriNetUnfolder]: 40179/68908 cut-off events. [2022-12-13 20:12:19,617 INFO L131 PetriNetUnfolder]: For 207659/215489 co-relation queries the response was YES. [2022-12-13 20:12:19,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278025 conditions, 68908 events. 40179/68908 cut-off events. For 207659/215489 co-relation queries the response was YES. Maximal size of possible extension queue 1623. Compared 598739 event pairs, 11502 based on Foata normal form. 9018/77602 useless extension candidates. Maximal degree in co-relation 277990. Up to 24336 conditions per place. [2022-12-13 20:12:20,058 INFO L137 encePairwiseOnDemand]: 694/702 looper letters, 116 selfloop transitions, 52 changer transitions 0/171 dead transitions. [2022-12-13 20:12:20,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 171 transitions, 1804 flow [2022-12-13 20:12:20,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 20:12:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 20:12:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3222 transitions. [2022-12-13 20:12:20,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4172494172494173 [2022-12-13 20:12:20,062 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3222 transitions. [2022-12-13 20:12:20,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3222 transitions. [2022-12-13 20:12:20,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:20,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3222 transitions. [2022-12-13 20:12:20,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 292.90909090909093) internal successors, (3222), 11 states have internal predecessors, (3222), 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 20:12:20,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 702.0) internal successors, (8424), 12 states have internal predecessors, (8424), 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 20:12:20,069 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 702.0) internal successors, (8424), 12 states have internal predecessors, (8424), 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 20:12:20,069 INFO L175 Difference]: Start difference. First operand has 118 places, 127 transitions, 1225 flow. Second operand 11 states and 3222 transitions. [2022-12-13 20:12:20,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 171 transitions, 1804 flow [2022-12-13 20:12:20,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 171 transitions, 1724 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-12-13 20:12:20,375 INFO L231 Difference]: Finished difference. Result has 125 places, 129 transitions, 1301 flow [2022-12-13 20:12:20,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1301, PETRI_PLACES=125, PETRI_TRANSITIONS=129} [2022-12-13 20:12:20,375 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2022-12-13 20:12:20,375 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 129 transitions, 1301 flow [2022-12-13 20:12:20,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 290.0) internal successors, (3190), 11 states have internal predecessors, (3190), 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 20:12:20,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:20,376 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:12:20,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-12-13 20:12:20,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:20,577 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 20:12:20,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash 638466087, now seen corresponding path program 2 times [2022-12-13 20:12:20,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:20,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341614062] [2022-12-13 20:12:20,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:20,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:20,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:20,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152697692] [2022-12-13 20:12:20,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:12:20,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:20,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:20,605 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:20,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc10076-fbf9-49a4-bd99-518090c65b17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-12-13 20:12:21,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:12:21,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:12:21,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 20:12:21,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 20:12:32,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:12:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 20:12:33,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:33,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341614062] [2022-12-13 20:12:33,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:33,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152697692] [2022-12-13 20:12:33,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152697692] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:12:33,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:12:33,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 20:12:33,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225227305] [2022-12-13 20:12:33,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:12:33,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:12:33,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:33,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:12:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=58, Unknown=1, NotChecked=0, Total=90 [2022-12-13 20:12:37,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:12:39,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:12:41,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:12:43,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:12:45,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:12:48,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:12:51,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 20:12:53,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:12:56,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:12:58,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:13:01,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:13:04,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:13:05,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2022-12-13 20:13:07,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 20:13:10,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]