./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu --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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:41,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:41,986 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:01:41,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:41,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:42,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:42,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:42,037 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:42,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:42,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:42,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:42,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:42,041 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:42,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:42,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:01:42,043 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:42,044 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:42,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:42,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:42,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:01:42,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:42,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:01:42,047 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:01:42,048 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:01:42,048 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:42,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:01:42,049 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:42,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:42,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:42,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:42,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:42,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:42,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:42,053 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:01:42,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:42,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:42,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:42,055 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:01:42,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:42,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:42,057 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:42,057 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_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2023-11-19 08:01:42,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:42,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:42,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:42,498 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:42,499 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:42,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2023-11-19 08:01:45,929 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:46,204 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:46,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2023-11-19 08:01:46,223 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/data/28a3754c4/62c82c709377447cbe490bbd00d76708/FLAG4f5310877 [2023-11-19 08:01:46,249 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/data/28a3754c4/62c82c709377447cbe490bbd00d76708 [2023-11-19 08:01:46,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:46,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:46,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:46,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:46,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:46,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dafcf9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46, skipping insertion in model container [2023-11-19 08:01:46,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:46,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:46,615 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:46,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:46,698 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:46,707 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:46,717 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:46,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46 WrapperNode [2023-11-19 08:01:46,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:46,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:46,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:46,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:46,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,830 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 301 [2023-11-19 08:01:46,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:46,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:46,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:46,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:46,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:46,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:46,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:46,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:46,930 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (1/1) ... [2023-11-19 08:01:46,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:46,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:46,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:47,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:01:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:01:47,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:01:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:01:47,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:01:47,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 08:01:47,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 08:01:47,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 08:01:47,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 08:01:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:47,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:01:47,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:01:47,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:01:47,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:47,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:47,044 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:01:47,250 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:47,253 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:48,001 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:48,332 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:48,332 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 08:01:48,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:48 BoogieIcfgContainer [2023-11-19 08:01:48,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:48,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:48,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:48,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:48,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:46" (1/3) ... [2023-11-19 08:01:48,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7993c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:48, skipping insertion in model container [2023-11-19 08:01:48,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:46" (2/3) ... [2023-11-19 08:01:48,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7993c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:48, skipping insertion in model container [2023-11-19 08:01:48,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:48" (3/3) ... [2023-11-19 08:01:48,354 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2023-11-19 08:01:48,363 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:01:48,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:48,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-19 08:01:48,374 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:01:48,529 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 08:01:48,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 279 transitions, 586 flow [2023-11-19 08:01:48,783 INFO L124 PetriNetUnfolderBase]: 18/275 cut-off events. [2023-11-19 08:01:48,784 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 08:01:48,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 275 events. 18/275 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 266 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 236. Up to 3 conditions per place. [2023-11-19 08:01:48,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 279 transitions, 586 flow [2023-11-19 08:01:48,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 249 transitions, 519 flow [2023-11-19 08:01:48,813 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:48,825 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 249 transitions, 519 flow [2023-11-19 08:01:48,829 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 249 transitions, 519 flow [2023-11-19 08:01:48,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 249 transitions, 519 flow [2023-11-19 08:01:48,908 INFO L124 PetriNetUnfolderBase]: 17/249 cut-off events. [2023-11-19 08:01:48,909 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 08:01:48,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 249 events. 17/249 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 263 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 236. Up to 3 conditions per place. [2023-11-19 08:01:48,922 INFO L119 LiptonReduction]: Number of co-enabled transitions 4938 [2023-11-19 08:02:03,050 INFO L134 LiptonReduction]: Checked pairs total: 12497 [2023-11-19 08:02:03,053 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-11-19 08:02:03,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:03,094 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;@66327611, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:03,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-19 08:02:03,097 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:02:03,097 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 08:02:03,098 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:03,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:03,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:02:03,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:02:03,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash 38539, now seen corresponding path program 1 times [2023-11-19 08:02:03,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:03,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417842597] [2023-11-19 08:02:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:03,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:03,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:03,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417842597] [2023-11-19 08:02:03,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417842597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:03,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:03,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:02:03,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832100955] [2023-11-19 08:02:03,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:03,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:03,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 537 [2023-11-19 08:02:03,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:03,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:03,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 537 [2023-11-19 08:02:03,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:07,648 INFO L124 PetriNetUnfolderBase]: 21401/28514 cut-off events. [2023-11-19 08:02:07,648 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-11-19 08:02:07,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58012 conditions, 28514 events. 21401/28514 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 150053 event pairs, 19681 based on Foata normal form. 0/14108 useless extension candidates. Maximal degree in co-relation 52248. Up to 27700 conditions per place. [2023-11-19 08:02:07,907 INFO L140 encePairwiseOnDemand]: 524/537 looper letters, 49 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-11-19 08:02:07,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 241 flow [2023-11-19 08:02:07,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 737 transitions. [2023-11-19 08:02:07,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45747982619491 [2023-11-19 08:02:07,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 737 transitions. [2023-11-19 08:02:07,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 737 transitions. [2023-11-19 08:02:07,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:07,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 737 transitions. [2023-11-19 08:02:07,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:07,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:07,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:07,968 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 133 flow. Second operand 3 states and 737 transitions. [2023-11-19 08:02:07,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 241 flow [2023-11-19 08:02:08,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 228 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 08:02:08,013 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 156 flow [2023-11-19 08:02:08,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-11-19 08:02:08,019 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2023-11-19 08:02:08,020 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 156 flow [2023-11-19 08:02:08,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:08,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:08,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:02:08,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:02:08,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:02:08,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1196482, now seen corresponding path program 1 times [2023-11-19 08:02:08,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:08,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695226235] [2023-11-19 08:02:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:08,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:08,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695226235] [2023-11-19 08:02:08,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695226235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:08,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561262125] [2023-11-19 08:02:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:08,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:08,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:08,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:08,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:02:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:08,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:02:08,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:08,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561262125] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:08,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:08,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 08:02:08,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050827996] [2023-11-19 08:02:08,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:08,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:02:08,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:08,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:02:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:08,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 537 [2023-11-19 08:02:08,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 226.14285714285714) internal successors, (1583), 7 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:08,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:08,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 537 [2023-11-19 08:02:08,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:11,980 INFO L124 PetriNetUnfolderBase]: 21413/28532 cut-off events. [2023-11-19 08:02:11,980 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-19 08:02:12,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57612 conditions, 28532 events. 21413/28532 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 150088 event pairs, 19681 based on Foata normal form. 0/14119 useless extension candidates. Maximal degree in co-relation 57507. Up to 27701 conditions per place. [2023-11-19 08:02:12,197 INFO L140 encePairwiseOnDemand]: 528/537 looper letters, 47 selfloop transitions, 25 changer transitions 0/74 dead transitions. [2023-11-19 08:02:12,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 378 flow [2023-11-19 08:02:12,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:02:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1653 transitions. [2023-11-19 08:02:12,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4397446129289705 [2023-11-19 08:02:12,206 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1653 transitions. [2023-11-19 08:02:12,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1653 transitions. [2023-11-19 08:02:12,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:12,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1653 transitions. [2023-11-19 08:02:12,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 236.14285714285714) internal successors, (1653), 7 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:12,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 537.0) internal successors, (4296), 8 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:12,228 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 537.0) internal successors, (4296), 8 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:12,229 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 156 flow. Second operand 7 states and 1653 transitions. [2023-11-19 08:02:12,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 378 flow [2023-11-19 08:02:12,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:12,233 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 310 flow [2023-11-19 08:02:12,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2023-11-19 08:02:12,234 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2023-11-19 08:02:12,234 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 310 flow [2023-11-19 08:02:12,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 226.14285714285714) internal successors, (1583), 7 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:12,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:12,236 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 08:02:12,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:02:12,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:12,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:02:12,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:12,452 INFO L85 PathProgramCache]: Analyzing trace with hash 37092714, now seen corresponding path program 1 times [2023-11-19 08:02:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910180680] [2023-11-19 08:02:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:12,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:02:12,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910180680] [2023-11-19 08:02:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910180680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:12,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:12,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:12,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207366351] [2023-11-19 08:02:12,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:12,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:12,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:12,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 537 [2023-11-19 08:02:12,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:12,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:12,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 537 [2023-11-19 08:02:12,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:15,336 INFO L124 PetriNetUnfolderBase]: 21407/28524 cut-off events. [2023-11-19 08:02:15,336 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-19 08:02:15,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57621 conditions, 28524 events. 21407/28524 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 150003 event pairs, 19681 based on Foata normal form. 0/14122 useless extension candidates. Maximal degree in co-relation 57556. Up to 27695 conditions per place. [2023-11-19 08:02:15,532 INFO L140 encePairwiseOnDemand]: 533/537 looper letters, 58 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-11-19 08:02:15,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 384 flow [2023-11-19 08:02:15,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2023-11-19 08:02:15,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500310366232154 [2023-11-19 08:02:15,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2023-11-19 08:02:15,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2023-11-19 08:02:15,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:15,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2023-11-19 08:02:15,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:15,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:15,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:15,551 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 310 flow. Second operand 3 states and 725 transitions. [2023-11-19 08:02:15,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 384 flow [2023-11-19 08:02:15,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 358 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:15,556 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 242 flow [2023-11-19 08:02:15,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2023-11-19 08:02:15,557 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-11-19 08:02:15,558 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 242 flow [2023-11-19 08:02:15,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:15,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:15,559 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 08:02:15,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:02:15,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:02:15,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1286417483, now seen corresponding path program 2 times [2023-11-19 08:02:15,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:15,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599604194] [2023-11-19 08:02:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:15,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:15,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599604194] [2023-11-19 08:02:15,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599604194] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:15,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750309458] [2023-11-19 08:02:15,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:02:15,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:15,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:15,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:15,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:02:15,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:02:15,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:15,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:02:15,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:02:15,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:15,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750309458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:15,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:15,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 08:02:15,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274459194] [2023-11-19 08:02:15,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:15,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:15,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:02:15,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 537 [2023-11-19 08:02:15,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:15,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:15,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 537 [2023-11-19 08:02:15,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:18,628 INFO L124 PetriNetUnfolderBase]: 21407/28523 cut-off events. [2023-11-19 08:02:18,628 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-19 08:02:18,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57608 conditions, 28523 events. 21407/28523 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 150060 event pairs, 19681 based on Foata normal form. 1/14125 useless extension candidates. Maximal degree in co-relation 57553. Up to 27706 conditions per place. [2023-11-19 08:02:18,806 INFO L140 encePairwiseOnDemand]: 534/537 looper letters, 57 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2023-11-19 08:02:18,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 358 flow [2023-11-19 08:02:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2023-11-19 08:02:18,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45623836126629425 [2023-11-19 08:02:18,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2023-11-19 08:02:18,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2023-11-19 08:02:18,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:18,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2023-11-19 08:02:18,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:18,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:18,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:18,830 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 242 flow. Second operand 3 states and 735 transitions. [2023-11-19 08:02:18,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 358 flow [2023-11-19 08:02:18,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:18,834 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 232 flow [2023-11-19 08:02:18,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2023-11-19 08:02:18,836 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2023-11-19 08:02:18,836 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 232 flow [2023-11-19 08:02:18,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:18,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:18,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:18,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:19,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:19,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:02:19,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2053644105, now seen corresponding path program 1 times [2023-11-19 08:02:19,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:19,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838151066] [2023-11-19 08:02:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:19,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:19,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838151066] [2023-11-19 08:02:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838151066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:19,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:19,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:19,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283441642] [2023-11-19 08:02:19,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:19,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:19,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:19,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:19,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:19,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 537 [2023-11-19 08:02:19,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:19,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:19,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 537 [2023-11-19 08:02:19,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:21,651 INFO L124 PetriNetUnfolderBase]: 18273/24485 cut-off events. [2023-11-19 08:02:21,651 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-19 08:02:21,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49808 conditions, 24485 events. 18273/24485 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 134609 event pairs, 9001 based on Foata normal form. 0/12355 useless extension candidates. Maximal degree in co-relation 49753. Up to 13416 conditions per place. [2023-11-19 08:02:21,776 INFO L140 encePairwiseOnDemand]: 534/537 looper letters, 87 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-19 08:02:21,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 91 transitions, 466 flow [2023-11-19 08:02:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2023-11-19 08:02:21,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47423960273122284 [2023-11-19 08:02:21,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2023-11-19 08:02:21,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2023-11-19 08:02:21,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:21,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2023-11-19 08:02:21,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:21,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:21,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:21,792 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 232 flow. Second operand 3 states and 764 transitions. [2023-11-19 08:02:21,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 91 transitions, 466 flow [2023-11-19 08:02:21,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 91 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:21,798 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 222 flow [2023-11-19 08:02:21,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2023-11-19 08:02:21,802 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2023-11-19 08:02:21,802 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 222 flow [2023-11-19 08:02:21,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:21,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:21,808 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-19 08:02:21,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:02:21,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:02:21,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:21,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2056302967, now seen corresponding path program 1 times [2023-11-19 08:02:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666600454] [2023-11-19 08:02:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:21,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:21,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666600454] [2023-11-19 08:02:21,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666600454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:21,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844067065] [2023-11-19 08:02:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:21,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:21,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:21,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:21,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:02:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:22,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:02:22,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:22,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:22,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844067065] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:22,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:22,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 08:02:22,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808192850] [2023-11-19 08:02:22,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:22,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:02:22,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:22,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:02:22,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:02:22,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 537 [2023-11-19 08:02:22,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 222 flow. Second operand has 13 states, 13 states have (on average 226.15384615384616) internal successors, (2940), 13 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:22,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:22,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 537 [2023-11-19 08:02:22,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:24,621 INFO L124 PetriNetUnfolderBase]: 18633/24857 cut-off events. [2023-11-19 08:02:24,621 INFO L125 PetriNetUnfolderBase]: For 1868/1868 co-relation queries the response was YES. [2023-11-19 08:02:24,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52048 conditions, 24857 events. 18633/24857 cut-off events. For 1868/1868 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 127839 event pairs, 17011 based on Foata normal form. 6/14528 useless extension candidates. Maximal degree in co-relation 51905. Up to 24132 conditions per place. [2023-11-19 08:02:24,757 INFO L140 encePairwiseOnDemand]: 531/537 looper letters, 45 selfloop transitions, 41 changer transitions 0/88 dead transitions. [2023-11-19 08:02:24,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 88 transitions, 532 flow [2023-11-19 08:02:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:02:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 08:02:24,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2792 transitions. [2023-11-19 08:02:24,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43327126008690253 [2023-11-19 08:02:24,777 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2792 transitions. [2023-11-19 08:02:24,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2792 transitions. [2023-11-19 08:02:24,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:24,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2792 transitions. [2023-11-19 08:02:24,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 232.66666666666666) internal successors, (2792), 12 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:24,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 537.0) internal successors, (6981), 13 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:24,813 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 537.0) internal successors, (6981), 13 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:24,813 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 222 flow. Second operand 12 states and 2792 transitions. [2023-11-19 08:02:24,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 88 transitions, 532 flow [2023-11-19 08:02:24,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 88 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:24,821 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 492 flow [2023-11-19 08:02:24,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=492, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2023-11-19 08:02:24,826 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-11-19 08:02:24,826 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 492 flow [2023-11-19 08:02:24,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 226.15384615384616) internal successors, (2940), 13 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:24,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:24,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:24,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:25,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:02:25,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:02:25,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:25,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2053644104, now seen corresponding path program 1 times [2023-11-19 08:02:25,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:25,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019231640] [2023-11-19 08:02:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:25,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:25,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:25,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019231640] [2023-11-19 08:02:25,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019231640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:25,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:25,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:25,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260495416] [2023-11-19 08:02:25,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:25,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:25,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:25,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:25,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 537 [2023-11-19 08:02:25,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:25,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:25,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 537 [2023-11-19 08:02:25,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:27,098 INFO L124 PetriNetUnfolderBase]: 12043/16289 cut-off events. [2023-11-19 08:02:27,098 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-19 08:02:27,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33504 conditions, 16289 events. 12043/16289 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 87191 event pairs, 4829 based on Foata normal form. 0/9061 useless extension candidates. Maximal degree in co-relation 33424. Up to 9188 conditions per place. [2023-11-19 08:02:27,172 INFO L140 encePairwiseOnDemand]: 532/537 looper letters, 107 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2023-11-19 08:02:27,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 764 flow [2023-11-19 08:02:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:27,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:02:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 989 transitions. [2023-11-19 08:02:27,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46042830540037244 [2023-11-19 08:02:27,179 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 989 transitions. [2023-11-19 08:02:27,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 989 transitions. [2023-11-19 08:02:27,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:27,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 989 transitions. [2023-11-19 08:02:27,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:27,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 537.0) internal successors, (2685), 5 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:27,188 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 537.0) internal successors, (2685), 5 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:27,189 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 492 flow. Second operand 4 states and 989 transitions. [2023-11-19 08:02:27,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 764 flow [2023-11-19 08:02:27,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 112 transitions, 640 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-19 08:02:27,194 INFO L231 Difference]: Finished difference. Result has 71 places, 86 transitions, 370 flow [2023-11-19 08:02:27,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=370, PETRI_PLACES=71, PETRI_TRANSITIONS=86} [2023-11-19 08:02:27,195 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2023-11-19 08:02:27,195 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 86 transitions, 370 flow [2023-11-19 08:02:27,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:27,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:27,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:27,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:02:27,197 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:02:27,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:27,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2053644243, now seen corresponding path program 1 times [2023-11-19 08:02:27,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:27,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571524636] [2023-11-19 08:02:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:27,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:27,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:27,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571524636] [2023-11-19 08:02:27,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571524636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:27,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:27,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:27,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843390211] [2023-11-19 08:02:27,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:27,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:27,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:27,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:27,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:27,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 537 [2023-11-19 08:02:27,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 86 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 222.75) internal successors, (891), 4 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:27,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:27,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 537 [2023-11-19 08:02:27,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:29,336 INFO L124 PetriNetUnfolderBase]: 14724/19981 cut-off events. [2023-11-19 08:02:29,336 INFO L125 PetriNetUnfolderBase]: For 1964/1964 co-relation queries the response was YES. [2023-11-19 08:02:29,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42568 conditions, 19981 events. 14724/19981 cut-off events. For 1964/1964 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 102990 event pairs, 13398 based on Foata normal form. 200/12942 useless extension candidates. Maximal degree in co-relation 42471. Up to 16100 conditions per place. [2023-11-19 08:02:29,448 INFO L140 encePairwiseOnDemand]: 528/537 looper letters, 130 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2023-11-19 08:02:29,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 137 transitions, 851 flow [2023-11-19 08:02:29,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:02:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1188 transitions. [2023-11-19 08:02:29,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424581005586592 [2023-11-19 08:02:29,454 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1188 transitions. [2023-11-19 08:02:29,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1188 transitions. [2023-11-19 08:02:29,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:29,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1188 transitions. [2023-11-19 08:02:29,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.6) internal successors, (1188), 5 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:29,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 537.0) internal successors, (3222), 6 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:29,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 537.0) internal successors, (3222), 6 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:29,468 INFO L175 Difference]: Start difference. First operand has 71 places, 86 transitions, 370 flow. Second operand 5 states and 1188 transitions. [2023-11-19 08:02:29,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 137 transitions, 851 flow [2023-11-19 08:02:29,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 137 transitions, 841 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:02:29,476 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 402 flow [2023-11-19 08:02:29,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2023-11-19 08:02:29,477 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 10 predicate places. [2023-11-19 08:02:29,478 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 402 flow [2023-11-19 08:02:29,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.75) internal successors, (891), 4 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:29,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:29,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:29,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:02:29,479 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:02:29,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash 313761622, now seen corresponding path program 1 times [2023-11-19 08:02:29,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:29,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290301066] [2023-11-19 08:02:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:29,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:29,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290301066] [2023-11-19 08:02:29,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290301066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:29,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475996287] [2023-11-19 08:02:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:29,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:29,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:29,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:29,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:02:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:29,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:02:29,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:02:29,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:29,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475996287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:29,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:29,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-19 08:02:29,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231201288] [2023-11-19 08:02:29,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:29,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:29,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:29,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 537 [2023-11-19 08:02:29,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 88 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:29,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:29,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 537 [2023-11-19 08:02:29,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:31,508 INFO L124 PetriNetUnfolderBase]: 11668/15885 cut-off events. [2023-11-19 08:02:31,508 INFO L125 PetriNetUnfolderBase]: For 1069/1069 co-relation queries the response was YES. [2023-11-19 08:02:31,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33306 conditions, 15885 events. 11668/15885 cut-off events. For 1069/1069 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 78896 event pairs, 10466 based on Foata normal form. 0/10358 useless extension candidates. Maximal degree in co-relation 33207. Up to 15377 conditions per place. [2023-11-19 08:02:31,596 INFO L140 encePairwiseOnDemand]: 534/537 looper letters, 83 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-11-19 08:02:31,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 86 transitions, 562 flow [2023-11-19 08:02:31,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 743 transitions. [2023-11-19 08:02:31,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612042209807573 [2023-11-19 08:02:31,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 743 transitions. [2023-11-19 08:02:31,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 743 transitions. [2023-11-19 08:02:31,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:31,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 743 transitions. [2023-11-19 08:02:31,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:31,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:31,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:31,607 INFO L175 Difference]: Start difference. First operand has 74 places, 88 transitions, 402 flow. Second operand 3 states and 743 transitions. [2023-11-19 08:02:31,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 86 transitions, 562 flow [2023-11-19 08:02:31,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 86 transitions, 554 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:31,612 INFO L231 Difference]: Finished difference. Result has 73 places, 86 transitions, 388 flow [2023-11-19 08:02:31,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=73, PETRI_TRANSITIONS=86} [2023-11-19 08:02:31,613 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2023-11-19 08:02:31,613 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 86 transitions, 388 flow [2023-11-19 08:02:31,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:31,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:31,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:31,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:31,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e05d7d-db1b-4d6c-913a-35cadb9008d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:31,835 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:02:31,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash 907981111, now seen corresponding path program 1 times [2023-11-19 08:02:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:31,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879293254] [2023-11-19 08:02:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:31,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:31,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:31,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879293254] [2023-11-19 08:02:31,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879293254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:31,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:31,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:02:31,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875804285] [2023-11-19 08:02:31,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:31,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:31,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:31,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:31,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 537 [2023-11-19 08:02:31,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 86 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:31,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:31,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 537 [2023-11-19 08:02:31,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand