./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/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_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 0.2.4-dev-0e0057c [2023-11-26 11:45:39,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:39,939 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:45:39,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:39,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:39,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:39,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:39,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:39,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:40,001 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:40,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:40,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:40,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:40,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:40,005 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:40,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:40,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:40,007 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:40,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:40,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:40,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:40,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:40,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:40,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:40,010 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:45:40,010 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:45:40,010 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:40,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:40,011 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:40,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:40,014 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:40,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:40,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:40,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:40,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:40,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:40,015 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:40,015 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:40,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:40,016 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:40,016 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:40,016 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:40,016 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:40,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:40,017 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_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2023-11-26 11:45:40,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:40,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:40,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:40,327 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:40,327 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:40,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-11-26 11:45:43,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:43,906 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:43,907 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-11-26 11:45:43,937 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/data/bc698560b/dc0a1d09a7d74ce7958a434dd4cab950/FLAG356d0d731 [2023-11-26 11:45:43,956 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/data/bc698560b/dc0a1d09a7d74ce7958a434dd4cab950 [2023-11-26 11:45:43,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:43,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:43,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:43,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:43,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:43,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:43" (1/1) ... [2023-11-26 11:45:43,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6bc32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:43, skipping insertion in model container [2023-11-26 11:45:43,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:43" (1/1) ... [2023-11-26 11:45:44,048 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:44,613 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:45:44,614 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:45:44,614 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:45:44,615 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:45:44,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:44,671 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:44,743 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:45:44,744 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:45:44,744 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:45:44,745 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 11:45:44,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:44,843 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:44,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44 WrapperNode [2023-11-26 11:45:44,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:44,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:44,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:44,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:44,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:44,884 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:44,921 INFO L138 Inliner]: procedures = 278, calls = 50, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 218 [2023-11-26 11:45:44,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:44,922 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:44,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:44,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:44,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:44,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:44,955 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:45,001 INFO L175 MemorySlicer]: Split 28 memory accesses to 4 slices as follows [2, 19, 5, 2]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 14 writes are split as follows [0, 13, 0, 1]. [2023-11-26 11:45:45,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:45,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:45,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:45,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:45,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:45,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:45,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:45,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:45,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:45,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:45,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (1/1) ... [2023-11-26 11:45:45,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:45,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:45,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:45,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:45:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:45:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:45:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:45:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:45:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:45:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:45:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:45:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:45:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:45:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:45:45,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:45:45,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:45:45,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:45:45,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:45:45,139 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:45:45,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:45:45,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:45,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:45:45,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:45:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:45:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:45:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:45:45,141 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:45:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:45:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:45:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:45:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:45,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:45,144 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:45:45,335 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:45,337 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:45,898 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:46,305 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:46,306 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-26 11:45:46,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:46 BoogieIcfgContainer [2023-11-26 11:45:46,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:46,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:46,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:46,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:46,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:43" (1/3) ... [2023-11-26 11:45:46,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12272072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:46, skipping insertion in model container [2023-11-26 11:45:46,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:44" (2/3) ... [2023-11-26 11:45:46,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12272072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:46, skipping insertion in model container [2023-11-26 11:45:46,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:46" (3/3) ... [2023-11-26 11:45:46,321 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2023-11-26 11:45:46,331 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:45:46,343 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:46,343 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-26 11:45:46,343 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:45:46,420 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:45:46,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 87 transitions, 181 flow [2023-11-26 11:45:46,537 INFO L124 PetriNetUnfolderBase]: 16/91 cut-off events. [2023-11-26 11:45:46,538 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:45:46,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 16/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 258 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-11-26 11:45:46,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 87 transitions, 181 flow [2023-11-26 11:45:46,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 86 transitions, 179 flow [2023-11-26 11:45:46,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:46,579 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=LoopHeads, 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;@7ee1b85c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:46,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-26 11:45:46,584 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:45:46,584 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-26 11:45:46,584 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:45:46,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:46,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:45:46,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:45:46,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:46,592 INFO L85 PathProgramCache]: Analyzing trace with hash 18747147, now seen corresponding path program 1 times [2023-11-26 11:45:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:46,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111022286] [2023-11-26 11:45:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:46,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:46,751 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:46,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057988280] [2023-11-26 11:45:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:46,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:46,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:46,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:46,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:45:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:46,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:46,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:46,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:46,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:46,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111022286] [2023-11-26 11:45:46,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:46,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057988280] [2023-11-26 11:45:46,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057988280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:46,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:46,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:45:46,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043244630] [2023-11-26 11:45:46,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:46,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:46,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:47,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:47,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-26 11:45:47,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:47,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:47,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-26 11:45:47,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:47,398 INFO L124 PetriNetUnfolderBase]: 150/477 cut-off events. [2023-11-26 11:45:47,398 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:45:47,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 477 events. 150/477 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2249 event pairs, 126 based on Foata normal form. 43/437 useless extension candidates. Maximal degree in co-relation 729. Up to 310 conditions per place. [2023-11-26 11:45:47,415 INFO L140 encePairwiseOnDemand]: 72/87 looper letters, 44 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-26 11:45:47,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 261 flow [2023-11-26 11:45:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:45:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2023-11-26 11:45:47,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6283524904214559 [2023-11-26 11:45:47,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 164 transitions. [2023-11-26 11:45:47,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 164 transitions. [2023-11-26 11:45:47,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:47,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 164 transitions. [2023-11-26 11:45:47,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:47,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:47,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:47,448 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 179 flow. Second operand 3 states and 164 transitions. [2023-11-26 11:45:47,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 261 flow [2023-11-26 11:45:47,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 261 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:45:47,457 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 175 flow [2023-11-26 11:45:47,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2023-11-26 11:45:47,500 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-11-26 11:45:47,501 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 175 flow [2023-11-26 11:45:47,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:47,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:47,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:45:47,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:47,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:45:47,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:45:47,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash 18747139, now seen corresponding path program 1 times [2023-11-26 11:45:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:47,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564103715] [2023-11-26 11:45:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:47,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:47,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:47,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564103715] [2023-11-26 11:45:47,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564103715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:47,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:47,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:47,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415793544] [2023-11-26 11:45:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:47,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:47,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-26 11:45:47,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:47,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:47,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-26 11:45:47,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:48,288 INFO L124 PetriNetUnfolderBase]: 150/491 cut-off events. [2023-11-26 11:45:48,289 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:45:48,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 491 events. 150/491 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2317 event pairs, 126 based on Foata normal form. 4/412 useless extension candidates. Maximal degree in co-relation 787. Up to 315 conditions per place. [2023-11-26 11:45:48,302 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 42 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-11-26 11:45:48,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 267 flow [2023-11-26 11:45:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:45:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:45:48,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578544061302682 [2023-11-26 11:45:48,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:45:48,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:45:48,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:48,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:45:48,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:48,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:48,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:48,320 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 175 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:45:48,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 267 flow [2023-11-26 11:45:48,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:45:48,326 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 189 flow [2023-11-26 11:45:48,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2023-11-26 11:45:48,329 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-11-26 11:45:48,330 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 189 flow [2023-11-26 11:45:48,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:48,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:48,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:45:48,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:45:48,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:45:48,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:48,333 INFO L85 PathProgramCache]: Analyzing trace with hash 836159281, now seen corresponding path program 1 times [2023-11-26 11:45:48,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:48,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089909004] [2023-11-26 11:45:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:48,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:48,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:48,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033898921] [2023-11-26 11:45:48,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:48,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:48,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:48,471 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:48,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:45:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:48,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:48,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:48,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:48,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:48,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089909004] [2023-11-26 11:45:48,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:48,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033898921] [2023-11-26 11:45:48,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033898921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:48,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:48,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:48,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123740033] [2023-11-26 11:45:48,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:48,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:48,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:48,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:48,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:48,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-26 11:45:48,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:48,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:48,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-26 11:45:48,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:49,019 INFO L124 PetriNetUnfolderBase]: 150/487 cut-off events. [2023-11-26 11:45:49,019 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-26 11:45:49,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 487 events. 150/487 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2286 event pairs, 126 based on Foata normal form. 4/412 useless extension candidates. Maximal degree in co-relation 772. Up to 307 conditions per place. [2023-11-26 11:45:49,023 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 37 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2023-11-26 11:45:49,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 271 flow [2023-11-26 11:45:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-11-26 11:45:49,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201149425287356 [2023-11-26 11:45:49,026 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-11-26 11:45:49,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-11-26 11:45:49,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:49,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-11-26 11:45:49,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,029 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,030 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 189 flow. Second operand 4 states and 181 transitions. [2023-11-26 11:45:49,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 271 flow [2023-11-26 11:45:49,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:45:49,033 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 195 flow [2023-11-26 11:45:49,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-26 11:45:49,035 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-11-26 11:45:49,035 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 195 flow [2023-11-26 11:45:49,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:49,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:49,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:49,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:49,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:45:49,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:49,248 INFO L85 PathProgramCache]: Analyzing trace with hash 151134513, now seen corresponding path program 1 times [2023-11-26 11:45:49,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:49,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902408672] [2023-11-26 11:45:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:49,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:49,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:49,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853196624] [2023-11-26 11:45:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:49,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:49,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:49,316 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:49,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:45:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:49,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:49,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:49,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:49,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902408672] [2023-11-26 11:45:49,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853196624] [2023-11-26 11:45:49,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853196624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:49,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:49,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462886224] [2023-11-26 11:45:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:49,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:49,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:49,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:49,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:49,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-26 11:45:49,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:49,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-26 11:45:49,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:49,890 INFO L124 PetriNetUnfolderBase]: 150/485 cut-off events. [2023-11-26 11:45:49,890 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-26 11:45:49,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 485 events. 150/485 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2275 event pairs, 126 based on Foata normal form. 2/408 useless extension candidates. Maximal degree in co-relation 759. Up to 315 conditions per place. [2023-11-26 11:45:49,895 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 40 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-11-26 11:45:49,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 285 flow [2023-11-26 11:45:49,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2023-11-26 11:45:49,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258620689655172 [2023-11-26 11:45:49,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 183 transitions. [2023-11-26 11:45:49,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 183 transitions. [2023-11-26 11:45:49,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:49,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 183 transitions. [2023-11-26 11:45:49,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,902 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,902 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 195 flow. Second operand 4 states and 183 transitions. [2023-11-26 11:45:49,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 285 flow [2023-11-26 11:45:49,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 273 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:45:49,909 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 201 flow [2023-11-26 11:45:49,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-11-26 11:45:49,911 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2023-11-26 11:45:49,912 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 201 flow [2023-11-26 11:45:49,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:49,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:49,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:50,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:50,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:45:50,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:50,119 INFO L85 PathProgramCache]: Analyzing trace with hash -788602861, now seen corresponding path program 1 times [2023-11-26 11:45:50,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:50,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536572922] [2023-11-26 11:45:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:50,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:50,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802037073] [2023-11-26 11:45:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:50,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:50,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:50,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:50,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:45:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:50,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:50,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:50,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:50,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:50,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536572922] [2023-11-26 11:45:50,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:50,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802037073] [2023-11-26 11:45:50,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802037073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:50,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:50,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:45:50,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881407754] [2023-11-26 11:45:50,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:50,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:45:50,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:50,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:45:50,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:45:50,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-26 11:45:50,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:50,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:50,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-26 11:45:50,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:51,011 INFO L124 PetriNetUnfolderBase]: 150/499 cut-off events. [2023-11-26 11:45:51,012 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-26 11:45:51,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 499 events. 150/499 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2360 event pairs, 126 based on Foata normal form. 6/426 useless extension candidates. Maximal degree in co-relation 791. Up to 309 conditions per place. [2023-11-26 11:45:51,016 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 42 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2023-11-26 11:45:51,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 313 flow [2023-11-26 11:45:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:45:51,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:45:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 289 transitions. [2023-11-26 11:45:51,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745484400656814 [2023-11-26 11:45:51,018 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 289 transitions. [2023-11-26 11:45:51,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 289 transitions. [2023-11-26 11:45:51,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:51,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 289 transitions. [2023-11-26 11:45:51,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.285714285714285) internal successors, (289), 7 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:51,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:51,023 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:51,023 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 201 flow. Second operand 7 states and 289 transitions. [2023-11-26 11:45:51,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 313 flow [2023-11-26 11:45:51,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:51,027 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 241 flow [2023-11-26 11:45:51,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2023-11-26 11:45:51,028 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-11-26 11:45:51,028 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 241 flow [2023-11-26 11:45:51,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:51,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:51,029 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2023-11-26 11:45:51,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:51,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:51,235 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:45:51,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:51,236 INFO L85 PathProgramCache]: Analyzing trace with hash 519157553, now seen corresponding path program 1 times [2023-11-26 11:45:51,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:51,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85989932] [2023-11-26 11:45:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:51,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:51,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:51,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849337426] [2023-11-26 11:45:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:51,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:51,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:51,348 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:51,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:45:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:51,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:45:51,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:51,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:51,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85989932] [2023-11-26 11:45:51,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849337426] [2023-11-26 11:45:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849337426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:51,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:51,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-26 11:45:51,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096770604] [2023-11-26 11:45:51,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:51,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:45:51,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:45:51,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:45:51,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-26 11:45:51,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 241 flow. Second operand has 14 states, 14 states have (on average 35.5) internal successors, (497), 14 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:51,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:51,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-26 11:45:51,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:52,727 INFO L124 PetriNetUnfolderBase]: 152/511 cut-off events. [2023-11-26 11:45:52,728 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-11-26 11:45:52,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 511 events. 152/511 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2443 event pairs, 126 based on Foata normal form. 4/436 useless extension candidates. Maximal degree in co-relation 832. Up to 309 conditions per place. [2023-11-26 11:45:52,732 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 40 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2023-11-26 11:45:52,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 86 transitions, 375 flow [2023-11-26 11:45:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:45:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 11:45:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 427 transitions. [2023-11-26 11:45:52,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44618599791013586 [2023-11-26 11:45:52,736 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 427 transitions. [2023-11-26 11:45:52,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 427 transitions. [2023-11-26 11:45:52,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:52,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 427 transitions. [2023-11-26 11:45:52,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:52,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:52,741 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:52,741 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 241 flow. Second operand 11 states and 427 transitions. [2023-11-26 11:45:52,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 86 transitions, 375 flow [2023-11-26 11:45:52,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 86 transitions, 363 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-26 11:45:52,747 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 280 flow [2023-11-26 11:45:52,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=280, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2023-11-26 11:45:52,748 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2023-11-26 11:45:52,748 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 280 flow [2023-11-26 11:45:52,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 35.5) internal successors, (497), 14 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:52,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:52,749 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-26 11:45:52,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 11:45:52,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:45:52,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:45:52,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:52,956 INFO L85 PathProgramCache]: Analyzing trace with hash 694220307, now seen corresponding path program 2 times [2023-11-26 11:45:52,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:52,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276233659] [2023-11-26 11:45:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:52,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:53,036 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:53,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766810535] [2023-11-26 11:45:53,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:45:53,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:53,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:53,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:53,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:45:53,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:45:53,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:53,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:53,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 11:45:53,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:53,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276233659] [2023-11-26 11:45:53,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766810535] [2023-11-26 11:45:53,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766810535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:53,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:53,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:53,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82191304] [2023-11-26 11:45:53,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:53,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:53,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:53,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:53,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:53,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-26 11:45:53,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:53,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:53,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-26 11:45:53,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:53,671 INFO L124 PetriNetUnfolderBase]: 152/509 cut-off events. [2023-11-26 11:45:53,672 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-26 11:45:53,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 509 events. 152/509 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2427 event pairs, 126 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 886. Up to 302 conditions per place. [2023-11-26 11:45:53,676 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 42 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2023-11-26 11:45:53,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 374 flow [2023-11-26 11:45:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-11-26 11:45:53,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201149425287356 [2023-11-26 11:45:53,678 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-11-26 11:45:53,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-11-26 11:45:53,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:53,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-11-26 11:45:53,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:53,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:53,681 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:53,681 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 280 flow. Second operand 4 states and 181 transitions. [2023-11-26 11:45:53,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 374 flow [2023-11-26 11:45:53,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 334 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-26 11:45:53,688 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 250 flow [2023-11-26 11:45:53,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-11-26 11:45:53,689 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-11-26 11:45:53,689 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 250 flow [2023-11-26 11:45:53,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:53,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:53,690 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-26 11:45:53,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 11:45:53,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:53,897 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:45:53,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:53,897 INFO L85 PathProgramCache]: Analyzing trace with hash 45993659, now seen corresponding path program 1 times [2023-11-26 11:45:53,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:53,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800512232] [2023-11-26 11:45:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:53,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:53,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:53,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985371311] [2023-11-26 11:45:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:53,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:53,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:53,976 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:54,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:45:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:54,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:45:54,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:54,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800512232] [2023-11-26 11:45:54,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985371311] [2023-11-26 11:45:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985371311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:54,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:54,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-26 11:45:54,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080535830] [2023-11-26 11:45:54,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:54,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 11:45:54,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 11:45:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:45:54,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-26 11:45:54,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 35.4375) internal successors, (567), 16 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:54,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:54,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-26 11:45:54,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:55,522 INFO L124 PetriNetUnfolderBase]: 150/543 cut-off events. [2023-11-26 11:45:55,522 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-26 11:45:55,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 543 events. 150/543 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2490 event pairs, 126 based on Foata normal form. 8/474 useless extension candidates. Maximal degree in co-relation 852. Up to 309 conditions per place. [2023-11-26 11:45:55,527 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 45 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-11-26 11:45:55,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 429 flow [2023-11-26 11:45:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:45:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:45:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 573 transitions. [2023-11-26 11:45:55,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43908045977011495 [2023-11-26 11:45:55,531 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 573 transitions. [2023-11-26 11:45:55,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 573 transitions. [2023-11-26 11:45:55,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:55,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 573 transitions. [2023-11-26 11:45:55,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 38.2) internal successors, (573), 15 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:55,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:55,540 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:55,541 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 250 flow. Second operand 15 states and 573 transitions. [2023-11-26 11:45:55,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 429 flow [2023-11-26 11:45:55,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 408 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:45:55,545 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 316 flow [2023-11-26 11:45:55,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=316, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2023-11-26 11:45:55,549 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2023-11-26 11:45:55,549 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 316 flow [2023-11-26 11:45:55,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 35.4375) internal successors, (567), 16 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:55,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:55,551 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2023-11-26 11:45:55,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:55,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:55,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:45:55,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:55,759 INFO L85 PathProgramCache]: Analyzing trace with hash -734420293, now seen corresponding path program 2 times [2023-11-26 11:45:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:55,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832453677] [2023-11-26 11:45:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:55,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:55,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:55,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509725434] [2023-11-26 11:45:55,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:45:55,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:55,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:55,912 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:55,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:45:56,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:45:56,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:56,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:56,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-26 11:45:56,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:56,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:56,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832453677] [2023-11-26 11:45:56,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:56,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509725434] [2023-11-26 11:45:56,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509725434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:56,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:56,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672852483] [2023-11-26 11:45:56,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:56,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:56,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-26 11:45:56,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:56,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:56,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-26 11:45:56,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:56,876 INFO L124 PetriNetUnfolderBase]: 150/542 cut-off events. [2023-11-26 11:45:56,876 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2023-11-26 11:45:56,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 542 events. 150/542 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2482 event pairs, 126 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 874. Up to 321 conditions per place. [2023-11-26 11:45:56,880 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 66 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2023-11-26 11:45:56,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 579 flow [2023-11-26 11:45:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2023-11-26 11:45:56,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2023-11-26 11:45:56,883 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 186 transitions. [2023-11-26 11:45:56,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 186 transitions. [2023-11-26 11:45:56,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:56,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 186 transitions. [2023-11-26 11:45:56,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:56,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:56,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:56,885 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 316 flow. Second operand 4 states and 186 transitions. [2023-11-26 11:45:56,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 579 flow [2023-11-26 11:45:56,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 555 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 11:45:56,890 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 328 flow [2023-11-26 11:45:56,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2023-11-26 11:45:56,893 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2023-11-26 11:45:56,893 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 328 flow [2023-11-26 11:45:56,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:56,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:56,894 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:56,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:57,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:57,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:45:57,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:57,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1168407891, now seen corresponding path program 1 times [2023-11-26 11:45:57,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:57,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817319485] [2023-11-26 11:45:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:57,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:57,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:57,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010865708] [2023-11-26 11:45:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:57,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:57,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:57,248 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:57,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:45:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:57,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:45:57,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:58,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:58,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:58,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817319485] [2023-11-26 11:45:58,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:58,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010865708] [2023-11-26 11:45:58,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010865708] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:58,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:58,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-26 11:45:58,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390826025] [2023-11-26 11:45:58,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:58,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-26 11:45:58,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-26 11:45:58,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-26 11:45:58,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-26 11:45:58,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 328 flow. Second operand has 32 states, 32 states have (on average 35.625) internal successors, (1140), 32 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:58,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:58,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-26 11:45:58,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:01,219 INFO L124 PetriNetUnfolderBase]: 150/638 cut-off events. [2023-11-26 11:46:01,219 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-11-26 11:46:01,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 638 events. 150/638 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2524 event pairs, 126 based on Foata normal form. 16/577 useless extension candidates. Maximal degree in co-relation 1119. Up to 309 conditions per place. [2023-11-26 11:46:01,224 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 54 selfloop transitions, 31 changer transitions 0/118 dead transitions. [2023-11-26 11:46:01,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 748 flow [2023-11-26 11:46:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 11:46:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-26 11:46:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1145 transitions. [2023-11-26 11:46:01,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42454579162031886 [2023-11-26 11:46:01,231 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1145 transitions. [2023-11-26 11:46:01,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1145 transitions. [2023-11-26 11:46:01,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:01,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1145 transitions. [2023-11-26 11:46:01,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 36.935483870967744) internal successors, (1145), 31 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:01,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 87.0) internal successors, (2784), 32 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:01,243 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 87.0) internal successors, (2784), 32 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:01,243 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 328 flow. Second operand 31 states and 1145 transitions. [2023-11-26 11:46:01,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 748 flow [2023-11-26 11:46:01,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 118 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:46:01,250 INFO L231 Difference]: Finished difference. Result has 140 places, 107 transitions, 589 flow [2023-11-26 11:46:01,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=589, PETRI_PLACES=140, PETRI_TRANSITIONS=107} [2023-11-26 11:46:01,251 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 66 predicate places. [2023-11-26 11:46:01,251 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 107 transitions, 589 flow [2023-11-26 11:46:01,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 35.625) internal successors, (1140), 32 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:01,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:01,252 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:01,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:01,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:46:01,460 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:46:01,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash -842868051, now seen corresponding path program 2 times [2023-11-26 11:46:01,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:01,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625711078] [2023-11-26 11:46:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:01,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:01,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:01,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249735242] [2023-11-26 11:46:01,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:01,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:01,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:01,776 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:01,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:46:02,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:46:02,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:02,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:46:02,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2023-11-26 11:46:02,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:02,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:02,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625711078] [2023-11-26 11:46:02,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:02,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249735242] [2023-11-26 11:46:02,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249735242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:02,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:02,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:02,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243929941] [2023-11-26 11:46:02,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:02,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:46:02,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:46:02,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:02,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-26 11:46:02,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 107 transitions, 589 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:02,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:02,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-26 11:46:02,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:03,014 INFO L124 PetriNetUnfolderBase]: 171/642 cut-off events. [2023-11-26 11:46:03,015 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2023-11-26 11:46:03,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1559 conditions, 642 events. 171/642 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2688 event pairs, 41 based on Foata normal form. 22/568 useless extension candidates. Maximal degree in co-relation 1208. Up to 208 conditions per place. [2023-11-26 11:46:03,020 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 112 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2023-11-26 11:46:03,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 152 transitions, 911 flow [2023-11-26 11:46:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:46:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:46:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2023-11-26 11:46:03,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6522988505747126 [2023-11-26 11:46:03,022 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 227 transitions. [2023-11-26 11:46:03,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 227 transitions. [2023-11-26 11:46:03,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:03,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 227 transitions. [2023-11-26 11:46:03,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:03,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:03,025 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:03,025 INFO L175 Difference]: Start difference. First operand has 140 places, 107 transitions, 589 flow. Second operand 4 states and 227 transitions. [2023-11-26 11:46:03,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 152 transitions, 911 flow [2023-11-26 11:46:03,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 152 transitions, 885 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-11-26 11:46:03,035 INFO L231 Difference]: Finished difference. Result has 130 places, 106 transitions, 569 flow [2023-11-26 11:46:03,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=130, PETRI_TRANSITIONS=106} [2023-11-26 11:46:03,036 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 56 predicate places. [2023-11-26 11:46:03,036 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 106 transitions, 569 flow [2023-11-26 11:46:03,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:03,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:03,037 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:03,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:03,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:46:03,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:46:03,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:03,244 INFO L85 PathProgramCache]: Analyzing trace with hash -359105192, now seen corresponding path program 1 times [2023-11-26 11:46:03,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:03,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483590631] [2023-11-26 11:46:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:03,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:03,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:03,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084231298] [2023-11-26 11:46:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:03,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:03,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:03,592 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:03,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:46:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:04,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-26 11:46:04,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:05,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:06,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483590631] [2023-11-26 11:46:06,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084231298] [2023-11-26 11:46:06,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084231298] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:06,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:06,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2023-11-26 11:46:06,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138568031] [2023-11-26 11:46:06,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:06,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-26 11:46:06,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:06,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-26 11:46:06,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2023-11-26 11:46:06,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-26 11:46:06,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 106 transitions, 569 flow. Second operand has 61 states, 61 states have (on average 35.59016393442623) internal successors, (2171), 61 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:06,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:06,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-26 11:46:06,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:12,503 INFO L124 PetriNetUnfolderBase]: 150/817 cut-off events. [2023-11-26 11:46:12,503 INFO L125 PetriNetUnfolderBase]: For 3485/3485 co-relation queries the response was YES. [2023-11-26 11:46:12,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 817 events. 150/817 cut-off events. For 3485/3485 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2629 event pairs, 126 based on Foata normal form. 30/793 useless extension candidates. Maximal degree in co-relation 1679. Up to 309 conditions per place. [2023-11-26 11:46:12,510 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 69 selfloop transitions, 61 changer transitions 0/162 dead transitions. [2023-11-26 11:46:12,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 162 transitions, 1516 flow [2023-11-26 11:46:12,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-26 11:46:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-26 11:46:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 2217 transitions. [2023-11-26 11:46:12,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177501413227812 [2023-11-26 11:46:12,523 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 2217 transitions. [2023-11-26 11:46:12,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 2217 transitions. [2023-11-26 11:46:12,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:12,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 2217 transitions. [2023-11-26 11:46:12,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 36.34426229508197) internal successors, (2217), 61 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:12,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 87.0) internal successors, (5394), 62 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:12,549 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 87.0) internal successors, (5394), 62 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:12,550 INFO L175 Difference]: Start difference. First operand has 130 places, 106 transitions, 569 flow. Second operand 61 states and 2217 transitions. [2023-11-26 11:46:12,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 162 transitions, 1516 flow [2023-11-26 11:46:12,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 162 transitions, 1508 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:46:12,566 INFO L231 Difference]: Finished difference. Result has 203 places, 137 transitions, 1141 flow [2023-11-26 11:46:12,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1141, PETRI_PLACES=203, PETRI_TRANSITIONS=137} [2023-11-26 11:46:12,568 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 129 predicate places. [2023-11-26 11:46:12,568 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 137 transitions, 1141 flow [2023-11-26 11:46:12,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 35.59016393442623) internal successors, (2171), 61 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:12,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:12,570 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:12,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-26 11:46:12,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:46:12,780 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:46:12,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:12,780 INFO L85 PathProgramCache]: Analyzing trace with hash 465519720, now seen corresponding path program 2 times [2023-11-26 11:46:12,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:12,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423787980] [2023-11-26 11:46:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:12,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:13,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:13,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292066288] [2023-11-26 11:46:13,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:13,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:13,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:13,316 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:13,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:46:14,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:46:14,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:14,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:46:14,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2023-11-26 11:46:14,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:14,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:14,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423787980] [2023-11-26 11:46:14,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:14,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292066288] [2023-11-26 11:46:14,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292066288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:14,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:14,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:14,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398232602] [2023-11-26 11:46:14,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:14,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:46:14,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:14,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:46:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:14,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-26 11:46:14,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 137 transitions, 1141 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:14,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:14,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-26 11:46:14,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:15,322 INFO L124 PetriNetUnfolderBase]: 144/735 cut-off events. [2023-11-26 11:46:15,323 INFO L125 PetriNetUnfolderBase]: For 3349/3349 co-relation queries the response was YES. [2023-11-26 11:46:15,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2412 conditions, 735 events. 144/735 cut-off events. For 3349/3349 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2217 event pairs, 0 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1712. Up to 355 conditions per place. [2023-11-26 11:46:15,331 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 143 selfloop transitions, 3 changer transitions 0/183 dead transitions. [2023-11-26 11:46:15,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 183 transitions, 1525 flow [2023-11-26 11:46:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:46:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:46:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2023-11-26 11:46:15,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2023-11-26 11:46:15,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 228 transitions. [2023-11-26 11:46:15,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 228 transitions. [2023-11-26 11:46:15,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:15,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 228 transitions. [2023-11-26 11:46:15,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:15,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:15,335 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:15,335 INFO L175 Difference]: Start difference. First operand has 203 places, 137 transitions, 1141 flow. Second operand 4 states and 228 transitions. [2023-11-26 11:46:15,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 183 transitions, 1525 flow [2023-11-26 11:46:15,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 183 transitions, 1467 flow, removed 1 selfloop flow, removed 28 redundant places. [2023-11-26 11:46:15,363 INFO L231 Difference]: Finished difference. Result has 178 places, 136 transitions, 1091 flow [2023-11-26 11:46:15,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1091, PETRI_PLACES=178, PETRI_TRANSITIONS=136} [2023-11-26 11:46:15,364 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 104 predicate places. [2023-11-26 11:46:15,365 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 136 transitions, 1091 flow [2023-11-26 11:46:15,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:15,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:15,365 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-26 11:46:15,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-26 11:46:15,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:46:15,572 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:46:15,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:15,572 INFO L85 PathProgramCache]: Analyzing trace with hash -881692283, now seen corresponding path program 1 times [2023-11-26 11:46:15,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:15,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338995434] [2023-11-26 11:46:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:15,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:16,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:16,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359590843] [2023-11-26 11:46:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:16,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:16,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:16,202 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:16,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:46:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:22,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:46:22,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-26 11:46:22,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:22,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:22,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338995434] [2023-11-26 11:46:22,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:22,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359590843] [2023-11-26 11:46:22,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359590843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:22,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:22,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:46:22,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424757006] [2023-11-26 11:46:22,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:22,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:46:22,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:46:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:46:22,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-26 11:46:22,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 136 transitions, 1091 flow. Second operand has 9 states, 9 states have (on average 31.444444444444443) internal successors, (283), 9 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:22,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:22,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-26 11:46:22,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:23,402 INFO L124 PetriNetUnfolderBase]: 150/779 cut-off events. [2023-11-26 11:46:23,403 INFO L125 PetriNetUnfolderBase]: For 3195/3195 co-relation queries the response was YES. [2023-11-26 11:46:23,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 779 events. 150/779 cut-off events. For 3195/3195 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2406 event pairs, 126 based on Foata normal form. 29/754 useless extension candidates. Maximal degree in co-relation 1710. Up to 299 conditions per place. [2023-11-26 11:46:23,410 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 102 selfloop transitions, 73 changer transitions 0/203 dead transitions. [2023-11-26 11:46:23,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 203 transitions, 2241 flow [2023-11-26 11:46:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:46:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 11:46:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 382 transitions. [2023-11-26 11:46:23,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991640543364681 [2023-11-26 11:46:23,413 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 382 transitions. [2023-11-26 11:46:23,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 382 transitions. [2023-11-26 11:46:23,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:23,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 382 transitions. [2023-11-26 11:46:23,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:23,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:23,418 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:23,418 INFO L175 Difference]: Start difference. First operand has 178 places, 136 transitions, 1091 flow. Second operand 11 states and 382 transitions. [2023-11-26 11:46:23,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 203 transitions, 2241 flow [2023-11-26 11:46:23,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 203 transitions, 2235 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:46:23,448 INFO L231 Difference]: Finished difference. Result has 190 places, 202 transitions, 2299 flow [2023-11-26 11:46:23,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2299, PETRI_PLACES=190, PETRI_TRANSITIONS=202} [2023-11-26 11:46:23,450 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 116 predicate places. [2023-11-26 11:46:23,450 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 202 transitions, 2299 flow [2023-11-26 11:46:23,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 31.444444444444443) internal successors, (283), 9 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:23,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:23,450 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:23,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:23,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 11:46:23,676 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:46:23,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:23,676 INFO L85 PathProgramCache]: Analyzing trace with hash 687872000, now seen corresponding path program 1 times [2023-11-26 11:46:23,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:23,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542761780] [2023-11-26 11:46:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:23,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:24,232 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:24,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071482186] [2023-11-26 11:46:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:24,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:24,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:24,240 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:24,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:46:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:26,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:46:26,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2207 trivial. 0 not checked. [2023-11-26 11:46:26,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2207 trivial. 0 not checked. [2023-11-26 11:46:26,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:26,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542761780] [2023-11-26 11:46:26,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:26,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071482186] [2023-11-26 11:46:26,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071482186] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:26,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:26,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-26 11:46:26,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743592215] [2023-11-26 11:46:26,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:26,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:46:26,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:26,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:46:26,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:46:26,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-26 11:46:26,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 202 transitions, 2299 flow. Second operand has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:26,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:26,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-26 11:46:26,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:27,695 INFO L124 PetriNetUnfolderBase]: 151/964 cut-off events. [2023-11-26 11:46:27,695 INFO L125 PetriNetUnfolderBase]: For 6735/6735 co-relation queries the response was YES. [2023-11-26 11:46:27,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3692 conditions, 964 events. 151/964 cut-off events. For 6735/6735 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2156 event pairs, 126 based on Foata normal form. 3/913 useless extension candidates. Maximal degree in co-relation 2867. Up to 300 conditions per place. [2023-11-26 11:46:27,706 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 218 selfloop transitions, 7 changer transitions 0/266 dead transitions. [2023-11-26 11:46:27,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 266 transitions, 3811 flow [2023-11-26 11:46:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:46:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:46:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 299 transitions. [2023-11-26 11:46:27,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909688013136289 [2023-11-26 11:46:27,708 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 299 transitions. [2023-11-26 11:46:27,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 299 transitions. [2023-11-26 11:46:27,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:27,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 299 transitions. [2023-11-26 11:46:27,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.714285714285715) internal successors, (299), 7 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:27,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:27,711 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:27,712 INFO L175 Difference]: Start difference. First operand has 190 places, 202 transitions, 2299 flow. Second operand 7 states and 299 transitions. [2023-11-26 11:46:27,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 266 transitions, 3811 flow [2023-11-26 11:46:27,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 266 transitions, 3793 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-26 11:46:27,832 INFO L231 Difference]: Finished difference. Result has 196 places, 205 transitions, 2399 flow [2023-11-26 11:46:27,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2399, PETRI_PLACES=196, PETRI_TRANSITIONS=205} [2023-11-26 11:46:27,833 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 122 predicate places. [2023-11-26 11:46:27,833 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 205 transitions, 2399 flow [2023-11-26 11:46:27,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:27,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:27,834 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-26 11:46:27,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:28,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 11:46:28,034 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:46:28,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:28,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1562656365, now seen corresponding path program 1 times [2023-11-26 11:46:28,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:28,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108533223] [2023-11-26 11:46:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:28,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:28,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:28,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164603426] [2023-11-26 11:46:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:28,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:28,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:28,549 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:28,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:46:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:32,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:46:32,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-26 11:46:32,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-26 11:46:32,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:32,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108533223] [2023-11-26 11:46:32,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:32,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164603426] [2023-11-26 11:46:32,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164603426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:32,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:32,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-26 11:46:32,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558127067] [2023-11-26 11:46:32,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:32,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:46:32,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:46:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:46:32,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-26 11:46:32,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 205 transitions, 2399 flow. Second operand has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:32,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:32,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-26 11:46:32,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:35,178 INFO L124 PetriNetUnfolderBase]: 151/933 cut-off events. [2023-11-26 11:46:35,179 INFO L125 PetriNetUnfolderBase]: For 6901/6901 co-relation queries the response was YES. [2023-11-26 11:46:35,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 933 events. 151/933 cut-off events. For 6901/6901 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2126 event pairs, 126 based on Foata normal form. 31/910 useless extension candidates. Maximal degree in co-relation 2903. Up to 299 conditions per place. [2023-11-26 11:46:35,186 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 111 selfloop transitions, 136 changer transitions 0/275 dead transitions. [2023-11-26 11:46:35,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 275 transitions, 3987 flow [2023-11-26 11:46:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 11:46:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-26 11:46:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 638 transitions. [2023-11-26 11:46:35,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38596491228070173 [2023-11-26 11:46:35,190 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 638 transitions. [2023-11-26 11:46:35,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 638 transitions. [2023-11-26 11:46:35,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:35,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 638 transitions. [2023-11-26 11:46:35,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 33.578947368421055) internal successors, (638), 19 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,196 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,199 INFO L175 Difference]: Start difference. First operand has 196 places, 205 transitions, 2399 flow. Second operand 19 states and 638 transitions. [2023-11-26 11:46:35,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 275 transitions, 3987 flow [2023-11-26 11:46:35,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 275 transitions, 3979 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:46:35,268 INFO L231 Difference]: Finished difference. Result has 213 places, 271 transitions, 3879 flow [2023-11-26 11:46:35,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3879, PETRI_PLACES=213, PETRI_TRANSITIONS=271} [2023-11-26 11:46:35,269 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 139 predicate places. [2023-11-26 11:46:35,270 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 271 transitions, 3879 flow [2023-11-26 11:46:35,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:35,271 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 63, 62, 62, 62, 3, 2, 2, 2, 1, 1] [2023-11-26 11:46:35,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:35,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:46:35,497 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 11:46:35,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:35,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1956966879, now seen corresponding path program 2 times [2023-11-26 11:46:35,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:35,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376238261] [2023-11-26 11:46:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:35,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:36,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:36,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280272885] [2023-11-26 11:46:36,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:36,536 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:36,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7adcca0-66a9-4fcb-a3b1-4114e2a14ece/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process