./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP --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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:10:39,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:10:39,820 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:10:39,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:10:39,832 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:10:39,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:10:39,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:10:39,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:10:39,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:10:39,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:10:39,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:10:39,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:10:39,885 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:10:39,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:10:39,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:10:39,887 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:10:39,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:10:39,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:10:39,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:10:39,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:10:39,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:10:39,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:10:39,890 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:10:39,891 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:10:39,891 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:10:39,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:10:39,892 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:10:39,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:10:39,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:10:39,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:10:39,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:10:39,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:10:39,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:10:39,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:10:39,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:10:39,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:10:39,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:10:39,897 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:10:39,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:10:39,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:10:39,898 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:10:39,898 INFO L153 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_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2023-11-06 22:10:40,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:10:40,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:10:40,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:10:40,291 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:10:40,291 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:10:40,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-11-06 22:10:43,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:10:43,823 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:10:43,824 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-11-06 22:10:43,843 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/data/7ae996b57/4f621e2fcc07447eaecee6f981396b04/FLAG5fd51a0a1 [2023-11-06 22:10:43,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/data/7ae996b57/4f621e2fcc07447eaecee6f981396b04 [2023-11-06 22:10:43,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:10:43,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:10:43,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:10:43,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:10:43,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:10:43,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:43" (1/1) ... [2023-11-06 22:10:43,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a7cc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:43, skipping insertion in model container [2023-11-06 22:10:43,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:43" (1/1) ... [2023-11-06 22:10:43,926 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:10:44,539 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:44,540 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:44,541 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:44,541 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:44,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:10:44,611 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:10:44,662 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:44,663 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:44,663 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:44,664 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:44,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:10:44,759 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:10:44,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44 WrapperNode [2023-11-06 22:10:44,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:10:44,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:10:44,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:10:44,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:10:44,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,791 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,847 INFO L138 Inliner]: procedures = 277, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 206 [2023-11-06 22:10:44,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:10:44,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:10:44,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:10:44,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:10:44,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:10:44,900 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:10:44,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:10:44,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:10:44,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (1/1) ... [2023-11-06 22:10:44,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:10:44,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:44,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:10:44,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:10:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:10:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:10:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:10:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:10:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:10:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:10:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:10:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:10:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:10:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:10:45,005 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:10:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:10:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:10:45,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:10:45,007 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:10:45,315 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:10:45,321 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:10:45,952 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:10:45,968 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:10:45,971 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 22:10:45,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:45 BoogieIcfgContainer [2023-11-06 22:10:45,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:10:45,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:10:45,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:10:45,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:10:45,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:10:43" (1/3) ... [2023-11-06 22:10:45,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe01fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:45, skipping insertion in model container [2023-11-06 22:10:45,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:44" (2/3) ... [2023-11-06 22:10:45,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe01fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:45, skipping insertion in model container [2023-11-06 22:10:45,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:45" (3/3) ... [2023-11-06 22:10:45,991 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2023-11-06 22:10:46,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:10:46,014 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:10:46,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-06 22:10:46,014 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:10:46,113 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:10:46,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 236 transitions, 479 flow [2023-11-06 22:10:46,306 INFO L124 PetriNetUnfolderBase]: 27/255 cut-off events. [2023-11-06 22:10:46,306 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:10:46,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 255 events. 27/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 755 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 135. Up to 4 conditions per place. [2023-11-06 22:10:46,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 236 transitions, 479 flow [2023-11-06 22:10:46,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 233 transitions, 473 flow [2023-11-06 22:10:46,341 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:10:46,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 233 transitions, 473 flow [2023-11-06 22:10:46,362 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 233 transitions, 473 flow [2023-11-06 22:10:46,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 233 transitions, 473 flow [2023-11-06 22:10:46,416 INFO L124 PetriNetUnfolderBase]: 26/252 cut-off events. [2023-11-06 22:10:46,416 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:10:46,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 252 events. 26/252 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 739 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 135. Up to 4 conditions per place. [2023-11-06 22:10:46,424 INFO L119 LiptonReduction]: Number of co-enabled transitions 6206 [2023-11-06 22:11:08,840 WARN L293 SmtUtils]: Spent 10.49s on a formula simplification. DAG size of input: 154 DAG size of output: 153 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:11:20,375 WARN L293 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 156 DAG size of output: 154 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:11:32,157 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 153 DAG size of output: 151 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:11:44,097 WARN L293 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 153 DAG size of output: 151 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:11:46,969 INFO L134 LiptonReduction]: Checked pairs total: 6888 [2023-11-06 22:11:46,970 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-11-06 22:11:46,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:11:46,991 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;@7277d68, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:11:46,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-06 22:11:46,995 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:11:46,995 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2023-11-06 22:11:46,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:46,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:46,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:11:46,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:47,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:47,003 INFO L85 PathProgramCache]: Analyzing trace with hash 950439, now seen corresponding path program 1 times [2023-11-06 22:11:47,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796852057] [2023-11-06 22:11:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:47,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:47,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:47,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959395795] [2023-11-06 22:11:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:47,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:47,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:47,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:47,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:11:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:47,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:11:47,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:47,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:47,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:47,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796852057] [2023-11-06 22:11:47,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959395795] [2023-11-06 22:11:47,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959395795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:47,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:47,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:47,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264742996] [2023-11-06 22:11:47,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:47,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:47,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:47,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:47,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:47,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 482 [2023-11-06 22:11:47,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 52 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:47,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:47,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 482 [2023-11-06 22:11:47,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:47,840 INFO L124 PetriNetUnfolderBase]: 102/232 cut-off events. [2023-11-06 22:11:47,840 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:11:47,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 232 events. 102/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 842 event pairs, 80 based on Foata normal form. 12/134 useless extension candidates. Maximal degree in co-relation 404. Up to 209 conditions per place. [2023-11-06 22:11:47,844 INFO L140 encePairwiseOnDemand]: 463/482 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-11-06 22:11:47,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 179 flow [2023-11-06 22:11:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-11-06 22:11:47,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46749654218533887 [2023-11-06 22:11:47,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-11-06 22:11:47,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-11-06 22:11:47,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:47,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-11-06 22:11:47,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:47,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:47,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:47,909 INFO L175 Difference]: Start difference. First operand has 41 places, 52 transitions, 111 flow. Second operand 3 states and 676 transitions. [2023-11-06 22:11:47,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 179 flow [2023-11-06 22:11:47,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 179 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:11:47,917 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 119 flow [2023-11-06 22:11:47,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-11-06 22:11:47,924 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-11-06 22:11:47,925 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 119 flow [2023-11-06 22:11:47,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:47,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:47,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:11:47,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:48,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:11:48,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:48,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:48,141 INFO L85 PathProgramCache]: Analyzing trace with hash 950679, now seen corresponding path program 1 times [2023-11-06 22:11:48,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:48,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810684009] [2023-11-06 22:11:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:48,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:48,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:48,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309028247] [2023-11-06 22:11:48,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:48,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:48,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:48,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:48,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:11:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:48,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:11:48,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:48,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:48,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:48,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810684009] [2023-11-06 22:11:48,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:48,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309028247] [2023-11-06 22:11:48,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309028247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:48,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:48,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:48,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499222686] [2023-11-06 22:11:48,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:48,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:48,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:48,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:48,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:48,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 482 [2023-11-06 22:11:48,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:48,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:48,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 482 [2023-11-06 22:11:48,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:48,727 INFO L124 PetriNetUnfolderBase]: 101/230 cut-off events. [2023-11-06 22:11:48,727 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:11:48,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 230 events. 101/230 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 837 event pairs, 80 based on Foata normal form. 2/127 useless extension candidates. Maximal degree in co-relation 442. Up to 206 conditions per place. [2023-11-06 22:11:48,730 INFO L140 encePairwiseOnDemand]: 477/482 looper letters, 32 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2023-11-06 22:11:48,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 183 flow [2023-11-06 22:11:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:48,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2023-11-06 22:11:48,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45712309820193636 [2023-11-06 22:11:48,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2023-11-06 22:11:48,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2023-11-06 22:11:48,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:48,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2023-11-06 22:11:48,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:48,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:48,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:48,748 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 119 flow. Second operand 3 states and 661 transitions. [2023-11-06 22:11:48,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 183 flow [2023-11-06 22:11:48,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:48,751 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 115 flow [2023-11-06 22:11:48,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-06 22:11:48,752 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-11-06 22:11:48,753 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 115 flow [2023-11-06 22:11:48,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:48,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:48,754 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-06 22:11:48,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:48,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:48,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:48,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:48,962 INFO L85 PathProgramCache]: Analyzing trace with hash 913616174, now seen corresponding path program 1 times [2023-11-06 22:11:48,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:48,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142331787] [2023-11-06 22:11:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:48,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:49,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:49,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142331787] [2023-11-06 22:11:49,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142331787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:49,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:49,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:11:49,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035060701] [2023-11-06 22:11:49,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:49,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:49,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:49,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:49,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:49,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 482 [2023-11-06 22:11:49,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 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) [2023-11-06 22:11:49,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:49,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 482 [2023-11-06 22:11:49,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:49,559 INFO L124 PetriNetUnfolderBase]: 101/232 cut-off events. [2023-11-06 22:11:49,560 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:11:49,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 232 events. 101/232 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 841 event pairs, 80 based on Foata normal form. 3/131 useless extension candidates. Maximal degree in co-relation 423. Up to 212 conditions per place. [2023-11-06 22:11:49,562 INFO L140 encePairwiseOnDemand]: 475/482 looper letters, 36 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-06 22:11:49,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 193 flow [2023-11-06 22:11:49,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-11-06 22:11:49,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45643153526970953 [2023-11-06 22:11:49,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-11-06 22:11:49,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-11-06 22:11:49,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:49,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-11-06 22:11:49,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:49,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:49,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:49,578 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 115 flow. Second operand 3 states and 660 transitions. [2023-11-06 22:11:49,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 193 flow [2023-11-06 22:11:49,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 183 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:49,582 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 127 flow [2023-11-06 22:11:49,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-11-06 22:11:49,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-11-06 22:11:49,583 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 127 flow [2023-11-06 22:11:49,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 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) [2023-11-06 22:11:49,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:49,585 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-06 22:11:49,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:11:49,585 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:49,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:49,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1825036190, now seen corresponding path program 1 times [2023-11-06 22:11:49,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:49,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709523072] [2023-11-06 22:11:49,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:49,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:49,651 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:49,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592061265] [2023-11-06 22:11:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:49,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:49,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:49,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:49,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:11:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:49,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:11:49,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:49,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:49,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:49,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709523072] [2023-11-06 22:11:49,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:49,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592061265] [2023-11-06 22:11:49,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592061265] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:49,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:49,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-06 22:11:49,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868345219] [2023-11-06 22:11:49,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:49,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:11:50,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:50,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:11:50,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:11:50,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 482 [2023-11-06 22:11:50,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 208.66666666666666) internal successors, (1252), 6 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:50,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:50,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 482 [2023-11-06 22:11:50,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:50,899 INFO L124 PetriNetUnfolderBase]: 103/244 cut-off events. [2023-11-06 22:11:50,900 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:11:50,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 244 events. 103/244 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 905 event pairs, 80 based on Foata normal form. 3/139 useless extension candidates. Maximal degree in co-relation 439. Up to 210 conditions per place. [2023-11-06 22:11:50,903 INFO L140 encePairwiseOnDemand]: 475/482 looper letters, 40 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-11-06 22:11:50,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 269 flow [2023-11-06 22:11:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:11:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:11:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1297 transitions. [2023-11-06 22:11:50,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.448478561549101 [2023-11-06 22:11:50,911 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1297 transitions. [2023-11-06 22:11:50,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1297 transitions. [2023-11-06 22:11:50,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:50,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1297 transitions. [2023-11-06 22:11:50,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 216.16666666666666) internal successors, (1297), 6 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:50,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 482.0) internal successors, (3374), 7 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:50,930 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 482.0) internal successors, (3374), 7 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:50,930 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 127 flow. Second operand 6 states and 1297 transitions. [2023-11-06 22:11:50,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 269 flow [2023-11-06 22:11:50,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 265 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:50,934 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 203 flow [2023-11-06 22:11:50,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-06 22:11:50,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2023-11-06 22:11:50,935 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 203 flow [2023-11-06 22:11:50,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 208.66666666666666) internal successors, (1252), 6 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:50,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:50,937 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-11-06 22:11:50,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:51,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:51,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:51,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash -165987435, now seen corresponding path program 1 times [2023-11-06 22:11:51,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:51,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649672440] [2023-11-06 22:11:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:51,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:51,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100248727] [2023-11-06 22:11:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:51,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:51,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:51,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:51,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:11:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:51,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:11:51,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:51,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:51,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649672440] [2023-11-06 22:11:51,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100248727] [2023-11-06 22:11:51,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100248727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:51,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:51,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-06 22:11:51,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087546257] [2023-11-06 22:11:51,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:51,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:11:51,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:51,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:11:51,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:11:52,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 482 [2023-11-06 22:11:52,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 203 flow. Second operand has 12 states, 12 states have (on average 208.33333333333334) internal successors, (2500), 12 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:52,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:52,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 482 [2023-11-06 22:11:52,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:53,354 INFO L124 PetriNetUnfolderBase]: 103/268 cut-off events. [2023-11-06 22:11:53,354 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-11-06 22:11:53,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 268 events. 103/268 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1080 event pairs, 80 based on Foata normal form. 12/167 useless extension candidates. Maximal degree in co-relation 456. Up to 210 conditions per place. [2023-11-06 22:11:53,357 INFO L140 encePairwiseOnDemand]: 475/482 looper letters, 52 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2023-11-06 22:11:53,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 521 flow [2023-11-06 22:11:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:11:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:11:53,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2566 transitions. [2023-11-06 22:11:53,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436376210235131 [2023-11-06 22:11:53,368 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2566 transitions. [2023-11-06 22:11:53,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2566 transitions. [2023-11-06 22:11:53,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:53,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2566 transitions. [2023-11-06 22:11:53,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:53,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:53,393 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:53,393 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 203 flow. Second operand 12 states and 2566 transitions. [2023-11-06 22:11:53,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 521 flow [2023-11-06 22:11:53,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 519 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:53,399 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 355 flow [2023-11-06 22:11:53,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=355, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-11-06 22:11:53,401 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2023-11-06 22:11:53,401 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 355 flow [2023-11-06 22:11:53,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 208.33333333333334) internal successors, (2500), 12 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:53,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:53,403 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-11-06 22:11:53,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:53,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:53,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:53,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:53,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1724501355, now seen corresponding path program 2 times [2023-11-06 22:11:53,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:53,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670291136] [2023-11-06 22:11:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:53,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296319932] [2023-11-06 22:11:53,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:53,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:53,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:53,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:53,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:11:54,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:11:54,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:54,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:11:54,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:54,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:54,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:54,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670291136] [2023-11-06 22:11:54,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296319932] [2023-11-06 22:11:54,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296319932] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:54,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:54,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-06 22:11:54,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612647371] [2023-11-06 22:11:54,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:54,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:11:54,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:11:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:11:55,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 482 [2023-11-06 22:11:55,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 355 flow. Second operand has 24 states, 24 states have (on average 208.16666666666666) internal successors, (4996), 24 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:55,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:55,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 482 [2023-11-06 22:11:55,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:58,349 INFO L124 PetriNetUnfolderBase]: 103/316 cut-off events. [2023-11-06 22:11:58,350 INFO L125 PetriNetUnfolderBase]: For 1219/1219 co-relation queries the response was YES. [2023-11-06 22:11:58,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 316 events. 103/316 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1218 event pairs, 80 based on Foata normal form. 24/215 useless extension candidates. Maximal degree in co-relation 642. Up to 210 conditions per place. [2023-11-06 22:11:58,353 INFO L140 encePairwiseOnDemand]: 475/482 looper letters, 76 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2023-11-06 22:11:58,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 105 transitions, 1141 flow [2023-11-06 22:11:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:11:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:11:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5104 transitions. [2023-11-06 22:11:58,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412171507607192 [2023-11-06 22:11:58,385 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5104 transitions. [2023-11-06 22:11:58,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5104 transitions. [2023-11-06 22:11:58,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:58,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5104 transitions. [2023-11-06 22:11:58,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 212.66666666666666) internal successors, (5104), 24 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:58,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 482.0) internal successors, (12050), 25 states have internal predecessors, (12050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:58,442 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 482.0) internal successors, (12050), 25 states have internal predecessors, (12050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:58,442 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 355 flow. Second operand 24 states and 5104 transitions. [2023-11-06 22:11:58,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 105 transitions, 1141 flow [2023-11-06 22:11:58,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 105 transitions, 1069 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-06 22:11:58,458 INFO L231 Difference]: Finished difference. Result has 100 places, 69 transitions, 621 flow [2023-11-06 22:11:58,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=621, PETRI_PLACES=100, PETRI_TRANSITIONS=69} [2023-11-06 22:11:58,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2023-11-06 22:11:58,463 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 69 transitions, 621 flow [2023-11-06 22:11:58,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 208.16666666666666) internal successors, (4996), 24 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:58,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:58,467 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-11-06 22:11:58,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:58,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:58,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:58,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:58,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1532780693, now seen corresponding path program 3 times [2023-11-06 22:11:58,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:58,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614321105] [2023-11-06 22:11:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:58,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:59,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:59,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195687054] [2023-11-06 22:11:59,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:11:59,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:59,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:59,141 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:59,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:12:00,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:12:00,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:00,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:12:00,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-06 22:12:00,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-06 22:12:00,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:00,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614321105] [2023-11-06 22:12:00,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:00,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195687054] [2023-11-06 22:12:00,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195687054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:00,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:00,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:12:00,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085183598] [2023-11-06 22:12:00,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:00,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:12:00,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:00,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:12:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:12:00,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 482 [2023-11-06 22:12:00,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 69 transitions, 621 flow. Second operand has 10 states, 10 states have (on average 200.4) internal successors, (2004), 10 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:00,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:00,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 482 [2023-11-06 22:12:00,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:02,126 INFO L124 PetriNetUnfolderBase]: 106/362 cut-off events. [2023-11-06 22:12:02,127 INFO L125 PetriNetUnfolderBase]: For 935/935 co-relation queries the response was YES. [2023-11-06 22:12:02,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 362 events. 106/362 cut-off events. For 935/935 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1166 event pairs, 80 based on Foata normal form. 2/241 useless extension candidates. Maximal degree in co-relation 1025. Up to 202 conditions per place. [2023-11-06 22:12:02,131 INFO L140 encePairwiseOnDemand]: 473/482 looper letters, 102 selfloop transitions, 18 changer transitions 0/124 dead transitions. [2023-11-06 22:12:02,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 124 transitions, 1435 flow [2023-11-06 22:12:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:12:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:12:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2246 transitions. [2023-11-06 22:12:02,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42361373066767255 [2023-11-06 22:12:02,141 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2246 transitions. [2023-11-06 22:12:02,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2246 transitions. [2023-11-06 22:12:02,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:02,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2246 transitions. [2023-11-06 22:12:02,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 204.1818181818182) internal successors, (2246), 11 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:02,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 482.0) internal successors, (5784), 12 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:02,161 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 482.0) internal successors, (5784), 12 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:02,162 INFO L175 Difference]: Start difference. First operand has 100 places, 69 transitions, 621 flow. Second operand 11 states and 2246 transitions. [2023-11-06 22:12:02,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 124 transitions, 1435 flow [2023-11-06 22:12:02,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 124 transitions, 1362 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-11-06 22:12:02,184 INFO L231 Difference]: Finished difference. Result has 103 places, 82 transitions, 790 flow [2023-11-06 22:12:02,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=790, PETRI_PLACES=103, PETRI_TRANSITIONS=82} [2023-11-06 22:12:02,185 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2023-11-06 22:12:02,185 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 82 transitions, 790 flow [2023-11-06 22:12:02,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 200.4) internal successors, (2004), 10 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:02,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:02,187 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 2, 1, 1, 1] [2023-11-06 22:12:02,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:02,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:12:02,394 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:12:02,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash 271564399, now seen corresponding path program 1 times [2023-11-06 22:12:02,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:02,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941658247] [2023-11-06 22:12:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:02,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:12:02,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737672326] [2023-11-06 22:12:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:02,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:02,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:02,872 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:02,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:12:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:04,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:12:04,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:04,714 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:12:04,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:12:05,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:05,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941658247] [2023-11-06 22:12:05,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:05,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737672326] [2023-11-06 22:12:05,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737672326] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:05,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:05,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-11-06 22:12:05,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582217395] [2023-11-06 22:12:05,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:05,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 22:12:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:05,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 22:12:05,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:12:05,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 482 [2023-11-06 22:12:05,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 82 transitions, 790 flow. Second operand has 32 states, 32 states have (on average 208.15625) internal successors, (6661), 32 states have internal predecessors, (6661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:05,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:05,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 482 [2023-11-06 22:12:05,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:08,082 INFO L124 PetriNetUnfolderBase]: 106/410 cut-off events. [2023-11-06 22:12:08,083 INFO L125 PetriNetUnfolderBase]: For 10430/10430 co-relation queries the response was YES. [2023-11-06 22:12:08,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1835 conditions, 410 events. 106/410 cut-off events. For 10430/10430 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1376 event pairs, 80 based on Foata normal form. 32/341 useless extension candidates. Maximal degree in co-relation 1564. Up to 213 conditions per place. [2023-11-06 22:12:08,088 INFO L140 encePairwiseOnDemand]: 476/482 looper letters, 120 selfloop transitions, 41 changer transitions 0/165 dead transitions. [2023-11-06 22:12:08,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 165 transitions, 2374 flow [2023-11-06 22:12:08,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:12:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-06 22:12:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6762 transitions. [2023-11-06 22:12:08,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384076763485477 [2023-11-06 22:12:08,110 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6762 transitions. [2023-11-06 22:12:08,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6762 transitions. [2023-11-06 22:12:08,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:08,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6762 transitions. [2023-11-06 22:12:08,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 211.3125) internal successors, (6762), 32 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:08,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 482.0) internal successors, (15906), 33 states have internal predecessors, (15906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:08,160 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 482.0) internal successors, (15906), 33 states have internal predecessors, (15906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:08,160 INFO L175 Difference]: Start difference. First operand has 103 places, 82 transitions, 790 flow. Second operand 32 states and 6762 transitions. [2023-11-06 22:12:08,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 165 transitions, 2374 flow [2023-11-06 22:12:08,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 165 transitions, 2351 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:08,186 INFO L231 Difference]: Finished difference. Result has 141 places, 93 transitions, 1051 flow [2023-11-06 22:12:08,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1051, PETRI_PLACES=141, PETRI_TRANSITIONS=93} [2023-11-06 22:12:08,190 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 100 predicate places. [2023-11-06 22:12:08,191 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 93 transitions, 1051 flow [2023-11-06 22:12:08,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 208.15625) internal successors, (6661), 32 states have internal predecessors, (6661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:08,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:08,193 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 2, 1, 1, 1] [2023-11-06 22:12:08,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:08,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:12:08,402 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:12:08,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash 80071279, now seen corresponding path program 2 times [2023-11-06 22:12:08,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:08,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916146408] [2023-11-06 22:12:08,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:08,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:09,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:12:09,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253141325] [2023-11-06 22:12:09,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:12:09,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:09,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:09,061 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:09,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:12:15,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:12:15,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:15,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:12:15,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-11-06 22:12:15,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:15,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:15,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916146408] [2023-11-06 22:12:15,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253141325] [2023-11-06 22:12:15,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253141325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:15,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:15,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:12:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084412161] [2023-11-06 22:12:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:12:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:12:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:12:15,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 482 [2023-11-06 22:12:15,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 93 transitions, 1051 flow. Second operand has 7 states, 7 states have (on average 203.14285714285714) internal successors, (1422), 7 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:15,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:15,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 482 [2023-11-06 22:12:15,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:16,340 INFO L124 PetriNetUnfolderBase]: 104/350 cut-off events. [2023-11-06 22:12:16,341 INFO L125 PetriNetUnfolderBase]: For 3111/3111 co-relation queries the response was YES. [2023-11-06 22:12:16,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 350 events. 104/350 cut-off events. For 3111/3111 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1073 event pairs, 80 based on Foata normal form. 60/309 useless extension candidates. Maximal degree in co-relation 1140. Up to 202 conditions per place. [2023-11-06 22:12:16,346 INFO L140 encePairwiseOnDemand]: 475/482 looper letters, 93 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2023-11-06 22:12:16,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 110 transitions, 1354 flow [2023-11-06 22:12:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:12:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:12:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1455 transitions. [2023-11-06 22:12:16,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312388855957321 [2023-11-06 22:12:16,355 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1455 transitions. [2023-11-06 22:12:16,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1455 transitions. [2023-11-06 22:12:16,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:16,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1455 transitions. [2023-11-06 22:12:16,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.85714285714286) internal successors, (1455), 7 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) [2023-11-06 22:12:16,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 482.0) internal successors, (3856), 8 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) [2023-11-06 22:12:16,372 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 482.0) internal successors, (3856), 8 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) [2023-11-06 22:12:16,373 INFO L175 Difference]: Start difference. First operand has 141 places, 93 transitions, 1051 flow. Second operand 7 states and 1455 transitions. [2023-11-06 22:12:16,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 110 transitions, 1354 flow [2023-11-06 22:12:16,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 110 transitions, 1241 flow, removed 6 selfloop flow, removed 23 redundant places. [2023-11-06 22:12:16,406 INFO L231 Difference]: Finished difference. Result has 122 places, 81 transitions, 767 flow [2023-11-06 22:12:16,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=767, PETRI_PLACES=122, PETRI_TRANSITIONS=81} [2023-11-06 22:12:16,407 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2023-11-06 22:12:16,408 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 81 transitions, 767 flow [2023-11-06 22:12:16,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.14285714285714) internal successors, (1422), 7 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:16,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:16,409 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2023-11-06 22:12:16,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:16,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:12:16,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:12:16,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:16,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1232498219, now seen corresponding path program 4 times [2023-11-06 22:12:16,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:16,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838079939] [2023-11-06 22:12:16,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:16,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:17,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:12:17,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116438301] [2023-11-06 22:12:17,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:12:17,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:17,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:17,869 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:17,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:13:13,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:13:13,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:13,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 5600 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:13:13,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2023-11-06 22:13:13,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2023-11-06 22:13:31,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:31,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838079939] [2023-11-06 22:13:31,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:13:31,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116438301] [2023-11-06 22:13:31,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116438301] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:31,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:13:31,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-06 22:13:31,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987633567] [2023-11-06 22:13:31,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:31,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:13:31,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:31,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:13:31,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=32, Unknown=2, NotChecked=0, Total=56 [2023-11-06 22:13:34,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:13:36,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:13:37,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 482 [2023-11-06 22:13:37,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 81 transitions, 767 flow. Second operand has 8 states, 8 states have (on average 205.5) internal successors, (1644), 8 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:37,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:37,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 482 [2023-11-06 22:13:37,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:45,923 INFO L124 PetriNetUnfolderBase]: 104/354 cut-off events. [2023-11-06 22:13:45,924 INFO L125 PetriNetUnfolderBase]: For 2696/2696 co-relation queries the response was YES. [2023-11-06 22:13:45,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 354 events. 104/354 cut-off events. For 2696/2696 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 926 event pairs, 80 based on Foata normal form. 59/312 useless extension candidates. Maximal degree in co-relation 1096. Up to 202 conditions per place. [2023-11-06 22:13:45,927 INFO L140 encePairwiseOnDemand]: 477/482 looper letters, 155 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2023-11-06 22:13:45,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 167 transitions, 1972 flow [2023-11-06 22:13:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:13:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:13:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1467 transitions. [2023-11-06 22:13:45,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4347954949614701 [2023-11-06 22:13:45,933 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1467 transitions. [2023-11-06 22:13:45,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1467 transitions. [2023-11-06 22:13:45,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:45,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1467 transitions. [2023-11-06 22:13:45,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.57142857142858) internal successors, (1467), 7 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:45,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 482.0) internal successors, (3856), 8 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) [2023-11-06 22:13:45,946 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 482.0) internal successors, (3856), 8 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) [2023-11-06 22:13:45,946 INFO L175 Difference]: Start difference. First operand has 122 places, 81 transitions, 767 flow. Second operand 7 states and 1467 transitions. [2023-11-06 22:13:45,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 167 transitions, 1972 flow [2023-11-06 22:13:45,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 167 transitions, 1221 flow, removed 330 selfloop flow, removed 15 redundant places. [2023-11-06 22:13:45,968 INFO L231 Difference]: Finished difference. Result has 113 places, 78 transitions, 552 flow [2023-11-06 22:13:45,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=552, PETRI_PLACES=113, PETRI_TRANSITIONS=78} [2023-11-06 22:13:45,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2023-11-06 22:13:45,969 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 78 transitions, 552 flow [2023-11-06 22:13:45,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.5) internal successors, (1644), 8 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:45,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:45,970 INFO L208 CegarLoopForPetriNet]: trace histogram [90, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:13:46,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:46,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:46,192 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:13:46,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash -936915134, now seen corresponding path program 1 times [2023-11-06 22:13:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:46,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70233611] [2023-11-06 22:13:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:46,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:47,895 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:13:47,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542597440] [2023-11-06 22:13:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:47,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:47,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:47,909 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:47,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:13:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:53,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 8108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:13:53,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 0 proven. 2889 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2023-11-06 22:13:53,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 0 proven. 2889 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2023-11-06 22:13:53,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:53,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70233611] [2023-11-06 22:13:53,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:13:53,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542597440] [2023-11-06 22:13:53,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542597440] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:53,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:13:53,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-06 22:13:53,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850465327] [2023-11-06 22:13:53,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:53,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:13:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:13:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:13:53,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 482 [2023-11-06 22:13:53,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 78 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 209.5) internal successors, (2095), 10 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:53,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:53,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 482 [2023-11-06 22:13:53,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:55,035 INFO L124 PetriNetUnfolderBase]: 107/485 cut-off events. [2023-11-06 22:13:55,035 INFO L125 PetriNetUnfolderBase]: For 4139/4139 co-relation queries the response was YES. [2023-11-06 22:13:55,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1559 conditions, 485 events. 107/485 cut-off events. For 4139/4139 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 825 event pairs, 80 based on Foata normal form. 5/389 useless extension candidates. Maximal degree in co-relation 1107. Up to 202 conditions per place. [2023-11-06 22:13:55,039 INFO L140 encePairwiseOnDemand]: 478/482 looper letters, 284 selfloop transitions, 10 changer transitions 0/298 dead transitions. [2023-11-06 22:13:55,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 298 transitions, 2330 flow [2023-11-06 22:13:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:13:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:13:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2129 transitions. [2023-11-06 22:13:55,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441701244813278 [2023-11-06 22:13:55,045 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2129 transitions. [2023-11-06 22:13:55,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2129 transitions. [2023-11-06 22:13:55,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:55,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2129 transitions. [2023-11-06 22:13:55,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 212.9) internal successors, (2129), 10 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:55,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 482.0) internal successors, (5302), 11 states have internal predecessors, (5302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:55,062 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 482.0) internal successors, (5302), 11 states have internal predecessors, (5302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:55,062 INFO L175 Difference]: Start difference. First operand has 113 places, 78 transitions, 552 flow. Second operand 10 states and 2129 transitions. [2023-11-06 22:13:55,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 298 transitions, 2330 flow [2023-11-06 22:13:55,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 298 transitions, 2324 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:13:55,084 INFO L231 Difference]: Finished difference. Result has 124 places, 82 transitions, 861 flow [2023-11-06 22:13:55,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=861, PETRI_PLACES=124, PETRI_TRANSITIONS=82} [2023-11-06 22:13:55,086 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2023-11-06 22:13:55,086 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 82 transitions, 861 flow [2023-11-06 22:13:55,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 209.5) internal successors, (2095), 10 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:55,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:55,087 INFO L208 CegarLoopForPetriNet]: trace histogram [240, 8, 8, 1, 1, 1, 1, 1] [2023-11-06 22:13:55,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:55,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:55,300 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:13:55,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:55,301 INFO L85 PathProgramCache]: Analyzing trace with hash -982240982, now seen corresponding path program 2 times [2023-11-06 22:13:55,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:55,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531091138] [2023-11-06 22:13:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:55,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:59,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:13:59,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077152255] [2023-11-06 22:13:59,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:59,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:59,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:59,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:59,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:14:08,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:14:08,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:08,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:14:08,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30664 trivial. 0 not checked. [2023-11-06 22:14:08,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:08,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:08,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531091138] [2023-11-06 22:14:08,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:14:08,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077152255] [2023-11-06 22:14:08,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077152255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:08,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:08,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:14:08,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559380835] [2023-11-06 22:14:08,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:08,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:08,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:08,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:08,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:08,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 482 [2023-11-06 22:14:08,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 82 transitions, 861 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:08,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:08,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 482 [2023-11-06 22:14:08,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:08,715 INFO L124 PetriNetUnfolderBase]: 87/444 cut-off events. [2023-11-06 22:14:08,716 INFO L125 PetriNetUnfolderBase]: For 4513/4513 co-relation queries the response was YES. [2023-11-06 22:14:08,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 444 events. 87/444 cut-off events. For 4513/4513 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 681 event pairs, 48 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 1128. Up to 306 conditions per place. [2023-11-06 22:14:08,721 INFO L140 encePairwiseOnDemand]: 479/482 looper letters, 93 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-11-06 22:14:08,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 99 transitions, 1085 flow [2023-11-06 22:14:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:08,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-11-06 22:14:08,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661134163208852 [2023-11-06 22:14:08,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-11-06 22:14:08,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-11-06 22:14:08,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:08,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-11-06 22:14:08,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:08,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:08,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:08,728 INFO L175 Difference]: Start difference. First operand has 124 places, 82 transitions, 861 flow. Second operand 3 states and 674 transitions. [2023-11-06 22:14:08,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 99 transitions, 1085 flow [2023-11-06 22:14:08,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 99 transitions, 1079 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:14:08,752 INFO L231 Difference]: Finished difference. Result has 122 places, 81 transitions, 857 flow [2023-11-06 22:14:08,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=857, PETRI_PLACES=122, PETRI_TRANSITIONS=81} [2023-11-06 22:14:08,754 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2023-11-06 22:14:08,754 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 81 transitions, 857 flow [2023-11-06 22:14:08,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:08,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:08,755 INFO L208 CegarLoopForPetriNet]: trace histogram [240, 8, 8, 1, 1, 1, 1, 1] [2023-11-06 22:14:08,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:08,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:08,968 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:14:08,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash -982240943, now seen corresponding path program 1 times [2023-11-06 22:14:08,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:08,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540386075] [2023-11-06 22:14:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:08,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:13,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:14:13,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989744931] [2023-11-06 22:14:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:13,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:13,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:13,875 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:13,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:14:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:28,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 21468 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:14:28,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 30664 backedges. 0 proven. 26944 refuted. 0 times theorem prover too weak. 3720 trivial. 0 not checked. [2023-11-06 22:14:29,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:14:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30664 backedges. 0 proven. 26944 refuted. 0 times theorem prover too weak. 3720 trivial. 0 not checked. [2023-11-06 22:14:30,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:30,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540386075] [2023-11-06 22:14:30,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:14:30,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989744931] [2023-11-06 22:14:30,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989744931] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:14:30,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:14:30,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2023-11-06 22:14:30,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761241349] [2023-11-06 22:14:30,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:14:30,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:14:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:14:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:14:30,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 482 [2023-11-06 22:14:30,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 81 transitions, 857 flow. Second operand has 12 states, 12 states have (on average 209.83333333333334) internal successors, (2518), 12 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:30,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:30,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 482 [2023-11-06 22:14:30,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:31,804 INFO L124 PetriNetUnfolderBase]: 90/513 cut-off events. [2023-11-06 22:14:31,804 INFO L125 PetriNetUnfolderBase]: For 5642/5642 co-relation queries the response was YES. [2023-11-06 22:14:31,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 513 events. 90/513 cut-off events. For 5642/5642 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 643 event pairs, 64 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 1409. Up to 167 conditions per place. [2023-11-06 22:14:31,808 INFO L140 encePairwiseOnDemand]: 478/482 looper letters, 347 selfloop transitions, 12 changer transitions 0/363 dead transitions. [2023-11-06 22:14:31,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 363 transitions, 2930 flow [2023-11-06 22:14:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:14:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:14:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2545 transitions. [2023-11-06 22:14:31,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44000691562932226 [2023-11-06 22:14:31,813 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2545 transitions. [2023-11-06 22:14:31,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2545 transitions. [2023-11-06 22:14:31,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:31,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2545 transitions. [2023-11-06 22:14:31,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 212.08333333333334) internal successors, (2545), 12 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:31,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:31,827 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:31,827 INFO L175 Difference]: Start difference. First operand has 122 places, 81 transitions, 857 flow. Second operand 12 states and 2545 transitions. [2023-11-06 22:14:31,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 363 transitions, 2930 flow [2023-11-06 22:14:31,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 363 transitions, 2926 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:31,854 INFO L231 Difference]: Finished difference. Result has 134 places, 84 transitions, 1048 flow [2023-11-06 22:14:31,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1048, PETRI_PLACES=134, PETRI_TRANSITIONS=84} [2023-11-06 22:14:31,855 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2023-11-06 22:14:31,855 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 84 transitions, 1048 flow [2023-11-06 22:14:31,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 209.83333333333334) internal successors, (2518), 12 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:31,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:31,857 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1] [2023-11-06 22:14:31,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:32,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:32,072 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:14:32,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:32,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1665736991, now seen corresponding path program 2 times [2023-11-06 22:14:32,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:32,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679323101] [2023-11-06 22:14:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:37,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:14:37,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379989249] [2023-11-06 22:14:37,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:14:37,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:37,977 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:38,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce64ab77-c3bb-4076-8c58-48a840cf200f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process