./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/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_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/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_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/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 1ecd7c8e693c00e4ad1aa87421fd475cfc129d605eef5f310568fee0c97eadf4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:19,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:19,841 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:59:19,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:19,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:19,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:19,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:19,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:19,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:19,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:19,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:19,896 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:19,896 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:19,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:19,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:19,899 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:19,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:19,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:19,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:19,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:19,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:19,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:19,902 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:59:19,903 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:59:19,903 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:19,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:19,904 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:19,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:19,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:19,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:19,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:19,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:19,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:19,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:59:19,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:19,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:19,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:19,909 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:59:19,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:19,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:19,910 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:19,911 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_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecd7c8e693c00e4ad1aa87421fd475cfc129d605eef5f310568fee0c97eadf4 [2023-11-19 07:59:20,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:20,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:20,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:20,307 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:20,308 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:20,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-19 07:59:23,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:23,783 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:23,784 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-19 07:59:23,801 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/data/823217383/c432fb61f4d142298fdd3496d8fde3a5/FLAG2421ef225 [2023-11-19 07:59:23,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/data/823217383/c432fb61f4d142298fdd3496d8fde3a5 [2023-11-19 07:59:23,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:23,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:23,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:23,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:23,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:23,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:23" (1/1) ... [2023-11-19 07:59:23,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630ff191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:23, skipping insertion in model container [2023-11-19 07:59:23,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:23" (1/1) ... [2023-11-19 07:59:23,887 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:24,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:24,156 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:24,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:24,207 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:24,207 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:24,216 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:24,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24 WrapperNode [2023-11-19 07:59:24,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:24,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:24,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:24,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:24,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,286 INFO L138 Inliner]: procedures = 28, calls = 81, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 444 [2023-11-19 07:59:24,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:24,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:24,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:24,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:24,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:24,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:24,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:24,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:24,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (1/1) ... [2023-11-19 07:59:24,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:24,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:24,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:24,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:24,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:24,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:59:24,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:59:24,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:59:24,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:59:24,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:59:24,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:59:24,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:59:24,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:59:24,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:59:24,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:59:24,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:59:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:59:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:59:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:59:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:24,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:59:24,461 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 07:59:24,621 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:24,623 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:25,516 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:25,826 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:25,827 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-19 07:59:25,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:25 BoogieIcfgContainer [2023-11-19 07:59:25,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:25,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:25,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:25,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:25,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:23" (1/3) ... [2023-11-19 07:59:25,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bae49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:25, skipping insertion in model container [2023-11-19 07:59:25,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:24" (2/3) ... [2023-11-19 07:59:25,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bae49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:25, skipping insertion in model container [2023-11-19 07:59:25,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:25" (3/3) ... [2023-11-19 07:59:25,851 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-11-19 07:59:25,861 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:59:25,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:25,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-19 07:59:25,873 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:59:26,064 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:59:26,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 470 transitions, 961 flow [2023-11-19 07:59:26,416 INFO L124 PetriNetUnfolderBase]: 37/467 cut-off events. [2023-11-19 07:59:26,417 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:59:26,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 467 events. 37/467 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 625 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 377. Up to 2 conditions per place. [2023-11-19 07:59:26,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 443 places, 470 transitions, 961 flow [2023-11-19 07:59:26,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 443 transitions, 901 flow [2023-11-19 07:59:26,448 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:59:26,465 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 417 places, 443 transitions, 901 flow [2023-11-19 07:59:26,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 417 places, 443 transitions, 901 flow [2023-11-19 07:59:26,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 417 places, 443 transitions, 901 flow [2023-11-19 07:59:26,562 INFO L124 PetriNetUnfolderBase]: 36/443 cut-off events. [2023-11-19 07:59:26,563 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:59:26,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 443 events. 36/443 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 570 event pairs, 0 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 377. Up to 2 conditions per place. [2023-11-19 07:59:26,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 7704 [2023-11-19 07:59:45,741 INFO L134 LiptonReduction]: Checked pairs total: 8926 [2023-11-19 07:59:45,741 INFO L136 LiptonReduction]: Total number of compositions: 515 [2023-11-19 07:59:45,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:45,764 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;@393cb762, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:45,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-19 07:59:45,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:59:45,768 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:59:45,768 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:59:45,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:45,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:59:45,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 07:59:45,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:45,775 INFO L85 PathProgramCache]: Analyzing trace with hash 64615, now seen corresponding path program 1 times [2023-11-19 07:59:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:45,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153677209] [2023-11-19 07:59:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:45,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:46,172 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 07:59:46,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:46,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153677209] [2023-11-19 07:59:46,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153677209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:46,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:46,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:59:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872724572] [2023-11-19 07:59:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:46,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:46,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:46,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 985 [2023-11-19 07:59:46,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 0 states have call successors, (0), 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 07:59:46,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:46,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 985 [2023-11-19 07:59:46,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:46,941 INFO L124 PetriNetUnfolderBase]: 1367/1882 cut-off events. [2023-11-19 07:59:46,941 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-19 07:59:46,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 1882 events. 1367/1882 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7839 event pairs, 800 based on Foata normal form. 0/884 useless extension candidates. Maximal degree in co-relation 3513. Up to 1828 conditions per place. [2023-11-19 07:59:46,962 INFO L140 encePairwiseOnDemand]: 959/985 looper letters, 46 selfloop transitions, 12 changer transitions 2/63 dead transitions. [2023-11-19 07:59:46,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 261 flow [2023-11-19 07:59:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:59:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1277 transitions. [2023-11-19 07:59:46,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214890016920476 [2023-11-19 07:59:46,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1277 transitions. [2023-11-19 07:59:46,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1277 transitions. [2023-11-19 07:59:46,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:46,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1277 transitions. [2023-11-19 07:59:47,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 0 states have call successors, (0), 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 07:59:47,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 07:59:47,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 07:59:47,028 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 133 flow. Second operand 3 states and 1277 transitions. [2023-11-19 07:59:47,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 261 flow [2023-11-19 07:59:47,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 252 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:59:47,040 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 211 flow [2023-11-19 07:59:47,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2023-11-19 07:59:47,049 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -7 predicate places. [2023-11-19 07:59:47,050 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 211 flow [2023-11-19 07:59:47,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 0 states have call successors, (0), 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 07:59:47,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:47,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:59:47,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:59:47,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 07:59:47,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:47,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2007726, now seen corresponding path program 1 times [2023-11-19 07:59:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:47,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67017360] [2023-11-19 07:59:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:47,354 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 07:59:47,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:47,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67017360] [2023-11-19 07:59:47,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67017360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966962010] [2023-11-19 07:59:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:47,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:47,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:47,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:47,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:59:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:47,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:59:47,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:47,570 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 07:59:47,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:47,593 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 07:59:47,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966962010] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:47,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:47,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:59:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958378744] [2023-11-19 07:59:47,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:47,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:47,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:47,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:47,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:47,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 985 [2023-11-19 07:59:47,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 402.14285714285717) internal successors, (2815), 7 states have internal predecessors, (2815), 0 states have call successors, (0), 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 07:59:47,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:47,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 985 [2023-11-19 07:59:47,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:48,491 INFO L124 PetriNetUnfolderBase]: 1389/1910 cut-off events. [2023-11-19 07:59:48,491 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:59:48,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3983 conditions, 1910 events. 1389/1910 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7924 event pairs, 796 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 3745. Up to 1822 conditions per place. [2023-11-19 07:59:48,509 INFO L140 encePairwiseOnDemand]: 965/985 looper letters, 42 selfloop transitions, 58 changer transitions 0/103 dead transitions. [2023-11-19 07:59:48,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 103 transitions, 591 flow [2023-11-19 07:59:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:59:48,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2919 transitions. [2023-11-19 07:59:48,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4233502538071066 [2023-11-19 07:59:48,523 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2919 transitions. [2023-11-19 07:59:48,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2919 transitions. [2023-11-19 07:59:48,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:48,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2919 transitions. [2023-11-19 07:59:48,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 0 states have call successors, (0), 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 07:59:48,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 985.0) internal successors, (7880), 8 states have internal predecessors, (7880), 0 states have call successors, (0), 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 07:59:48,562 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 985.0) internal successors, (7880), 8 states have internal predecessors, (7880), 0 states have call successors, (0), 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 07:59:48,562 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 211 flow. Second operand 7 states and 2919 transitions. [2023-11-19 07:59:48,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 103 transitions, 591 flow [2023-11-19 07:59:48,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 103 transitions, 555 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:59:48,570 INFO L231 Difference]: Finished difference. Result has 58 places, 103 transitions, 565 flow [2023-11-19 07:59:48,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=565, PETRI_PLACES=58, PETRI_TRANSITIONS=103} [2023-11-19 07:59:48,572 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2023-11-19 07:59:48,572 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 103 transitions, 565 flow [2023-11-19 07:59:48,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 402.14285714285717) internal successors, (2815), 7 states have internal predecessors, (2815), 0 states have call successors, (0), 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 07:59:48,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:48,575 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 07:59:48,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:48,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:48,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 07:59:48,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:48,797 INFO L85 PathProgramCache]: Analyzing trace with hash 62243175, now seen corresponding path program 1 times [2023-11-19 07:59:48,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:48,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244806399] [2023-11-19 07:59:48,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:48,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:48,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244806399] [2023-11-19 07:59:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244806399] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:48,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790999058] [2023-11-19 07:59:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:48,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:48,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:48,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:48,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:59:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:49,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:59:49,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:49,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790999058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:49,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:59:49,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:59:49,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296464171] [2023-11-19 07:59:49,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:49,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:49,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:49,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 985 [2023-11-19 07:59:49,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 103 transitions, 565 flow. Second operand has 5 states, 5 states have (on average 401.8) internal successors, (2009), 5 states have internal predecessors, (2009), 0 states have call successors, (0), 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 07:59:49,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:49,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 985 [2023-11-19 07:59:49,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:49,864 INFO L124 PetriNetUnfolderBase]: 1377/1894 cut-off events. [2023-11-19 07:59:49,864 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-19 07:59:49,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 1894 events. 1377/1894 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7891 event pairs, 796 based on Foata normal form. 0/903 useless extension candidates. Maximal degree in co-relation 3871. Up to 1810 conditions per place. [2023-11-19 07:59:49,882 INFO L140 encePairwiseOnDemand]: 969/985 looper letters, 46 selfloop transitions, 38 changer transitions 0/87 dead transitions. [2023-11-19 07:59:49,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 625 flow [2023-11-19 07:59:49,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:59:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:59:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2077 transitions. [2023-11-19 07:59:49,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217258883248731 [2023-11-19 07:59:49,891 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2077 transitions. [2023-11-19 07:59:49,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2077 transitions. [2023-11-19 07:59:49,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:49,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2077 transitions. [2023-11-19 07:59:49,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 415.4) internal successors, (2077), 5 states have internal predecessors, (2077), 0 states have call successors, (0), 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 07:59:49,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 985.0) internal successors, (5910), 6 states have internal predecessors, (5910), 0 states have call successors, (0), 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 07:59:49,918 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 985.0) internal successors, (5910), 6 states have internal predecessors, (5910), 0 states have call successors, (0), 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 07:59:49,918 INFO L175 Difference]: Start difference. First operand has 58 places, 103 transitions, 565 flow. Second operand 5 states and 2077 transitions. [2023-11-19 07:59:49,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 625 flow [2023-11-19 07:59:49,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 559 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:49,924 INFO L231 Difference]: Finished difference. Result has 56 places, 87 transitions, 467 flow [2023-11-19 07:59:49,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=467, PETRI_PLACES=56, PETRI_TRANSITIONS=87} [2023-11-19 07:59:49,926 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2023-11-19 07:59:49,926 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 87 transitions, 467 flow [2023-11-19 07:59:49,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 401.8) internal successors, (2009), 5 states have internal predecessors, (2009), 0 states have call successors, (0), 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 07:59:49,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:49,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:59:49,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:50,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:50,156 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 07:59:50,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:50,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1930526154, now seen corresponding path program 1 times [2023-11-19 07:59:50,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:50,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698392123] [2023-11-19 07:59:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:50,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:50,288 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 07:59:50,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:50,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698392123] [2023-11-19 07:59:50,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698392123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:50,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:50,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:50,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338832981] [2023-11-19 07:59:50,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:50,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:50,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:50,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:50,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:50,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 985 [2023-11-19 07:59:50,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 87 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 417.6666666666667) internal successors, (1253), 3 states have internal predecessors, (1253), 0 states have call successors, (0), 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 07:59:50,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:50,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 985 [2023-11-19 07:59:50,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:50,800 INFO L124 PetriNetUnfolderBase]: 1378/1896 cut-off events. [2023-11-19 07:59:50,801 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-19 07:59:50,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4021 conditions, 1896 events. 1378/1896 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7883 event pairs, 796 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 3883. Up to 1843 conditions per place. [2023-11-19 07:59:50,818 INFO L140 encePairwiseOnDemand]: 980/985 looper letters, 79 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2023-11-19 07:59:50,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 89 transitions, 643 flow [2023-11-19 07:59:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:59:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1296 transitions. [2023-11-19 07:59:50,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385786802030457 [2023-11-19 07:59:50,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1296 transitions. [2023-11-19 07:59:50,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1296 transitions. [2023-11-19 07:59:50,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:50,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1296 transitions. [2023-11-19 07:59:50,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 432.0) internal successors, (1296), 3 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:50,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 07:59:50,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 07:59:50,855 INFO L175 Difference]: Start difference. First operand has 56 places, 87 transitions, 467 flow. Second operand 3 states and 1296 transitions. [2023-11-19 07:59:50,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 89 transitions, 643 flow [2023-11-19 07:59:50,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 589 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:59:50,863 INFO L231 Difference]: Finished difference. Result has 56 places, 89 transitions, 446 flow [2023-11-19 07:59:50,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=56, PETRI_TRANSITIONS=89} [2023-11-19 07:59:50,865 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2023-11-19 07:59:50,865 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 89 transitions, 446 flow [2023-11-19 07:59:50,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 417.6666666666667) internal successors, (1253), 3 states have internal predecessors, (1253), 0 states have call successors, (0), 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 07:59:50,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:50,867 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:59:50,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:59:50,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 07:59:50,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -313702778, now seen corresponding path program 2 times [2023-11-19 07:59:50,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:50,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893967689] [2023-11-19 07:59:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:50,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:51,019 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 07:59:51,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:51,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893967689] [2023-11-19 07:59:51,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893967689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:51,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617465605] [2023-11-19 07:59:51,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:59:51,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:51,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:51,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:51,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:59:51,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:59:51,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:51,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:51,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:51,183 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 07:59:51,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:51,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617465605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:51,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:59:51,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:59:51,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528534370] [2023-11-19 07:59:51,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:51,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:51,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:51,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:51,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:51,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 985 [2023-11-19 07:59:51,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 89 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 0 states have call successors, (0), 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 07:59:51,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:51,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 985 [2023-11-19 07:59:51,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:51,682 INFO L124 PetriNetUnfolderBase]: 1378/1895 cut-off events. [2023-11-19 07:59:51,683 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-19 07:59:51,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3995 conditions, 1895 events. 1378/1895 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7889 event pairs, 796 based on Foata normal form. 1/912 useless extension candidates. Maximal degree in co-relation 3872. Up to 1841 conditions per place. [2023-11-19 07:59:51,700 INFO L140 encePairwiseOnDemand]: 982/985 looper letters, 79 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2023-11-19 07:59:51,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 606 flow [2023-11-19 07:59:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:59:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1271 transitions. [2023-11-19 07:59:51,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43011844331641286 [2023-11-19 07:59:51,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1271 transitions. [2023-11-19 07:59:51,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1271 transitions. [2023-11-19 07:59:51,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:51,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1271 transitions. [2023-11-19 07:59:51,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.6666666666667) internal successors, (1271), 3 states have internal predecessors, (1271), 0 states have call successors, (0), 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 07:59:51,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 07:59:51,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 07:59:51,720 INFO L175 Difference]: Start difference. First operand has 56 places, 89 transitions, 446 flow. Second operand 3 states and 1271 transitions. [2023-11-19 07:59:51,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 606 flow [2023-11-19 07:59:51,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 597 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:51,725 INFO L231 Difference]: Finished difference. Result has 56 places, 88 transitions, 439 flow [2023-11-19 07:59:51,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=439, PETRI_PLACES=56, PETRI_TRANSITIONS=88} [2023-11-19 07:59:51,726 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2023-11-19 07:59:51,726 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 88 transitions, 439 flow [2023-11-19 07:59:51,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 0 states have call successors, (0), 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 07:59:51,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:51,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:59:51,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:51,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:51,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 07:59:51,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash -283227581, now seen corresponding path program 1 times [2023-11-19 07:59:51,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:51,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547186362] [2023-11-19 07:59:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:51,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,042 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 07:59:52,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547186362] [2023-11-19 07:59:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547186362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672874054] [2023-11-19 07:59:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:52,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:52,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:52,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:52,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:59:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:59:52,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:52,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:52,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672874054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:52,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:59:52,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-11-19 07:59:52,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732439203] [2023-11-19 07:59:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:52,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:52,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:52,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:52,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 985 [2023-11-19 07:59:52,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 88 transitions, 439 flow. Second operand has 5 states, 5 states have (on average 390.2) internal successors, (1951), 5 states have internal predecessors, (1951), 0 states have call successors, (0), 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 07:59:52,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:52,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 985 [2023-11-19 07:59:52,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:53,198 INFO L124 PetriNetUnfolderBase]: 2240/3156 cut-off events. [2023-11-19 07:59:53,198 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-19 07:59:53,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6660 conditions, 3156 events. 2240/3156 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 15505 event pairs, 1395 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 6603. Up to 1818 conditions per place. [2023-11-19 07:59:53,227 INFO L140 encePairwiseOnDemand]: 972/985 looper letters, 123 selfloop transitions, 19 changer transitions 0/145 dead transitions. [2023-11-19 07:59:53,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 145 transitions, 989 flow [2023-11-19 07:59:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:59:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2420 transitions. [2023-11-19 07:59:53,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40947546531302875 [2023-11-19 07:59:53,238 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2420 transitions. [2023-11-19 07:59:53,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2420 transitions. [2023-11-19 07:59:53,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:53,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2420 transitions. [2023-11-19 07:59:53,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 403.3333333333333) internal successors, (2420), 6 states have internal predecessors, (2420), 0 states have call successors, (0), 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 07:59:53,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 985.0) internal successors, (6895), 7 states have internal predecessors, (6895), 0 states have call successors, (0), 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 07:59:53,282 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 985.0) internal successors, (6895), 7 states have internal predecessors, (6895), 0 states have call successors, (0), 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 07:59:53,282 INFO L175 Difference]: Start difference. First operand has 56 places, 88 transitions, 439 flow. Second operand 6 states and 2420 transitions. [2023-11-19 07:59:53,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 145 transitions, 989 flow [2023-11-19 07:59:53,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 145 transitions, 977 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:59:53,292 INFO L231 Difference]: Finished difference. Result has 62 places, 100 transitions, 593 flow [2023-11-19 07:59:53,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=593, PETRI_PLACES=62, PETRI_TRANSITIONS=100} [2023-11-19 07:59:53,293 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-11-19 07:59:53,294 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 100 transitions, 593 flow [2023-11-19 07:59:53,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 390.2) internal successors, (1951), 5 states have internal predecessors, (1951), 0 states have call successors, (0), 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 07:59:53,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:53,296 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-19 07:59:53,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 07:59:53,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:59:53,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 07:59:53,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash -246389780, now seen corresponding path program 1 times [2023-11-19 07:59:53,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:53,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524938093] [2023-11-19 07:59:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:53,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:53,640 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 07:59:53,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:53,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524938093] [2023-11-19 07:59:53,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524938093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:53,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012437339] [2023-11-19 07:59:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:53,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:53,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:53,643 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:53,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:59:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:53,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:59:53,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:53,835 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 07:59:53,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:53,895 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 07:59:53,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012437339] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:53,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:53,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:59:53,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815233727] [2023-11-19 07:59:53,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:53,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:59:53,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:53,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:59:53,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:59:54,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 985 [2023-11-19 07:59:54,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 100 transitions, 593 flow. Second operand has 13 states, 13 states have (on average 402.15384615384613) internal successors, (5228), 13 states have internal predecessors, (5228), 0 states have call successors, (0), 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 07:59:54,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:54,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 985 [2023-11-19 07:59:54,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:55,090 INFO L124 PetriNetUnfolderBase]: 2317/3269 cut-off events. [2023-11-19 07:59:55,090 INFO L125 PetriNetUnfolderBase]: For 355/355 co-relation queries the response was YES. [2023-11-19 07:59:55,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7373 conditions, 3269 events. 2317/3269 cut-off events. For 355/355 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 15890 event pairs, 1402 based on Foata normal form. 30/1856 useless extension candidates. Maximal degree in co-relation 6761. Up to 3093 conditions per place. [2023-11-19 07:59:55,129 INFO L140 encePairwiseOnDemand]: 970/985 looper letters, 45 selfloop transitions, 118 changer transitions 0/166 dead transitions. [2023-11-19 07:59:55,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 166 transitions, 1417 flow [2023-11-19 07:59:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:59:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:59:55,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4973 transitions. [2023-11-19 07:59:55,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42072758037225044 [2023-11-19 07:59:55,151 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4973 transitions. [2023-11-19 07:59:55,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4973 transitions. [2023-11-19 07:59:55,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:55,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4973 transitions. [2023-11-19 07:59:55,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 414.4166666666667) internal successors, (4973), 12 states have internal predecessors, (4973), 0 states have call successors, (0), 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 07:59:55,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 985.0) internal successors, (12805), 13 states have internal predecessors, (12805), 0 states have call successors, (0), 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 07:59:55,197 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 985.0) internal successors, (12805), 13 states have internal predecessors, (12805), 0 states have call successors, (0), 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 07:59:55,197 INFO L175 Difference]: Start difference. First operand has 62 places, 100 transitions, 593 flow. Second operand 12 states and 4973 transitions. [2023-11-19 07:59:55,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 166 transitions, 1417 flow [2023-11-19 07:59:55,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 166 transitions, 1401 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:55,211 INFO L231 Difference]: Finished difference. Result has 78 places, 166 transitions, 1455 flow [2023-11-19 07:59:55,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1455, PETRI_PLACES=78, PETRI_TRANSITIONS=166} [2023-11-19 07:59:55,213 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 18 predicate places. [2023-11-19 07:59:55,216 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 166 transitions, 1455 flow [2023-11-19 07:59:55,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 402.15384615384613) internal successors, (5228), 13 states have internal predecessors, (5228), 0 states have call successors, (0), 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 07:59:55,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:55,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:55,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:55,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:55,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 07:59:55,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:55,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1597043430, now seen corresponding path program 1 times [2023-11-19 07:59:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:55,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906048915] [2023-11-19 07:59:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:55,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:55,585 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 07:59:55,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:55,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906048915] [2023-11-19 07:59:55,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906048915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:55,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:55,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:55,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888919647] [2023-11-19 07:59:55,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:55,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:55,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:55,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:55,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:55,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 985 [2023-11-19 07:59:55,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 166 transitions, 1455 flow. Second operand has 3 states, 3 states have (on average 418.6666666666667) internal successors, (1256), 3 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:55,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:55,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 985 [2023-11-19 07:59:55,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:56,352 INFO L124 PetriNetUnfolderBase]: 2341/3319 cut-off events. [2023-11-19 07:59:56,352 INFO L125 PetriNetUnfolderBase]: For 464/464 co-relation queries the response was YES. [2023-11-19 07:59:56,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 3319 events. 2341/3319 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 16255 event pairs, 1402 based on Foata normal form. 0/1876 useless extension candidates. Maximal degree in co-relation 7592. Up to 3193 conditions per place. [2023-11-19 07:59:56,376 INFO L140 encePairwiseOnDemand]: 980/985 looper letters, 175 selfloop transitions, 16 changer transitions 0/194 dead transitions. [2023-11-19 07:59:56,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 194 transitions, 2107 flow [2023-11-19 07:59:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:59:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1298 transitions. [2023-11-19 07:59:56,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392554991539763 [2023-11-19 07:59:56,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1298 transitions. [2023-11-19 07:59:56,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1298 transitions. [2023-11-19 07:59:56,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:56,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1298 transitions. [2023-11-19 07:59:56,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 432.6666666666667) internal successors, (1298), 3 states have internal predecessors, (1298), 0 states have call successors, (0), 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 07:59:56,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 07:59:56,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 07:59:56,397 INFO L175 Difference]: Start difference. First operand has 78 places, 166 transitions, 1455 flow. Second operand 3 states and 1298 transitions. [2023-11-19 07:59:56,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 194 transitions, 2107 flow [2023-11-19 07:59:56,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 194 transitions, 1669 flow, removed 143 selfloop flow, removed 5 redundant places. [2023-11-19 07:59:56,413 INFO L231 Difference]: Finished difference. Result has 76 places, 179 transitions, 1293 flow [2023-11-19 07:59:56,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1293, PETRI_PLACES=76, PETRI_TRANSITIONS=179} [2023-11-19 07:59:56,417 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 16 predicate places. [2023-11-19 07:59:56,418 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 179 transitions, 1293 flow [2023-11-19 07:59:56,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 418.6666666666667) internal successors, (1256), 3 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:56,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:56,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:56,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:59:56,420 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 07:59:56,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash -244574578, now seen corresponding path program 1 times [2023-11-19 07:59:56,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:56,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420876629] [2023-11-19 07:59:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:56,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:56,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:56,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420876629] [2023-11-19 07:59:56,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420876629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:56,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532866820] [2023-11-19 07:59:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:56,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:56,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:56,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:56,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:59:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:56,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:59:56,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:56,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:56,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532866820] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:56,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:56,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 12 [2023-11-19 07:59:56,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653665747] [2023-11-19 07:59:56,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:59:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:56,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:59:56,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:59:57,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 985 [2023-11-19 07:59:57,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 179 transitions, 1293 flow. Second operand has 13 states, 13 states have (on average 380.46153846153845) internal successors, (4946), 13 states have internal predecessors, (4946), 0 states have call successors, (0), 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 07:59:57,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:57,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 985 [2023-11-19 07:59:57,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:58,623 INFO L124 PetriNetUnfolderBase]: 3728/5237 cut-off events. [2023-11-19 07:59:58,623 INFO L125 PetriNetUnfolderBase]: For 870/870 co-relation queries the response was YES. [2023-11-19 07:59:58,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12194 conditions, 5237 events. 3728/5237 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 27079 event pairs, 2191 based on Foata normal form. 1/3091 useless extension candidates. Maximal degree in co-relation 11743. Up to 3150 conditions per place. [2023-11-19 07:59:58,660 INFO L140 encePairwiseOnDemand]: 973/985 looper letters, 226 selfloop transitions, 63 changer transitions 0/292 dead transitions. [2023-11-19 07:59:58,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 292 transitions, 2649 flow [2023-11-19 07:59:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:59:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 07:59:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 5024 transitions. [2023-11-19 07:59:58,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923467395548614 [2023-11-19 07:59:58,683 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 5024 transitions. [2023-11-19 07:59:58,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 5024 transitions. [2023-11-19 07:59:58,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:58,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 5024 transitions. [2023-11-19 07:59:58,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 386.46153846153845) internal successors, (5024), 13 states have internal predecessors, (5024), 0 states have call successors, (0), 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 07:59:58,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 985.0) internal successors, (13790), 14 states have internal predecessors, (13790), 0 states have call successors, (0), 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 07:59:58,734 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 985.0) internal successors, (13790), 14 states have internal predecessors, (13790), 0 states have call successors, (0), 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 07:59:58,734 INFO L175 Difference]: Start difference. First operand has 76 places, 179 transitions, 1293 flow. Second operand 13 states and 5024 transitions. [2023-11-19 07:59:58,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 292 transitions, 2649 flow [2023-11-19 07:59:58,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 292 transitions, 2617 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:58,757 INFO L231 Difference]: Finished difference. Result has 91 places, 200 transitions, 1664 flow [2023-11-19 07:59:58,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1664, PETRI_PLACES=91, PETRI_TRANSITIONS=200} [2023-11-19 07:59:58,759 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 31 predicate places. [2023-11-19 07:59:58,759 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 200 transitions, 1664 flow [2023-11-19 07:59:58,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 380.46153846153845) internal successors, (4946), 13 states have internal predecessors, (4946), 0 states have call successors, (0), 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 07:59:58,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:58,761 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:59:58,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:58,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:58,982 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 07:59:58,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:58,983 INFO L85 PathProgramCache]: Analyzing trace with hash -501043317, now seen corresponding path program 1 times [2023-11-19 07:59:58,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:58,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868931672] [2023-11-19 07:59:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:58,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:59:59,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:59,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868931672] [2023-11-19 07:59:59,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868931672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:59,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567370469] [2023-11-19 07:59:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:59,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:59,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:59,120 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:59,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:59:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:59,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:59:59,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:59,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:59,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567370469] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:59,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:59,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 17 [2023-11-19 07:59:59,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144160698] [2023-11-19 07:59:59,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:59,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:59:59,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:59:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:00:00,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 985 [2023-11-19 08:00:00,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 200 transitions, 1664 flow. Second operand has 18 states, 18 states have (on average 380.3333333333333) internal successors, (6846), 18 states have internal predecessors, (6846), 0 states have call successors, (0), 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 08:00:00,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:00,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 985 [2023-11-19 08:00:00,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:02,334 INFO L124 PetriNetUnfolderBase]: 5130/7169 cut-off events. [2023-11-19 08:00:02,334 INFO L125 PetriNetUnfolderBase]: For 1445/1445 co-relation queries the response was YES. [2023-11-19 08:00:02,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16761 conditions, 7169 events. 5130/7169 cut-off events. For 1445/1445 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 38155 event pairs, 2987 based on Foata normal form. 5/4211 useless extension candidates. Maximal degree in co-relation 16719. Up to 5022 conditions per place. [2023-11-19 08:00:02,385 INFO L140 encePairwiseOnDemand]: 973/985 looper letters, 224 selfloop transitions, 83 changer transitions 0/310 dead transitions. [2023-11-19 08:00:02,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 310 transitions, 3078 flow [2023-11-19 08:00:02,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 08:00:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-19 08:00:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 6926 transitions. [2023-11-19 08:00:02,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906373378454597 [2023-11-19 08:00:02,411 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 6926 transitions. [2023-11-19 08:00:02,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 6926 transitions. [2023-11-19 08:00:02,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:02,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 6926 transitions. [2023-11-19 08:00:02,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 384.77777777777777) internal successors, (6926), 18 states have internal predecessors, (6926), 0 states have call successors, (0), 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 08:00:02,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 985.0) internal successors, (18715), 19 states have internal predecessors, (18715), 0 states have call successors, (0), 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 08:00:02,459 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 985.0) internal successors, (18715), 19 states have internal predecessors, (18715), 0 states have call successors, (0), 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 08:00:02,459 INFO L175 Difference]: Start difference. First operand has 91 places, 200 transitions, 1664 flow. Second operand 18 states and 6926 transitions. [2023-11-19 08:00:02,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 310 transitions, 3078 flow [2023-11-19 08:00:02,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 310 transitions, 2984 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-19 08:00:02,485 INFO L231 Difference]: Finished difference. Result has 108 places, 218 transitions, 2018 flow [2023-11-19 08:00:02,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2018, PETRI_PLACES=108, PETRI_TRANSITIONS=218} [2023-11-19 08:00:02,487 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 48 predicate places. [2023-11-19 08:00:02,487 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 218 transitions, 2018 flow [2023-11-19 08:00:02,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 380.3333333333333) internal successors, (6846), 18 states have internal predecessors, (6846), 0 states have call successors, (0), 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 08:00:02,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:02,489 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:02,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:02,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:00:02,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:00:02,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:02,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1455495975, now seen corresponding path program 1 times [2023-11-19 08:00:02,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:02,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624943180] [2023-11-19 08:00:02,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:02,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:00:02,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:02,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624943180] [2023-11-19 08:00:02,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624943180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:02,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:02,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288097597] [2023-11-19 08:00:02,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:02,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:02,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:02,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:02,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:02,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 985 [2023-11-19 08:00:02,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 218 transitions, 2018 flow. Second operand has 3 states, 3 states have (on average 419.3333333333333) internal successors, (1258), 3 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:02,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:02,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 985 [2023-11-19 08:00:02,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:04,234 INFO L124 PetriNetUnfolderBase]: 5107/7142 cut-off events. [2023-11-19 08:00:04,235 INFO L125 PetriNetUnfolderBase]: For 1718/1718 co-relation queries the response was YES. [2023-11-19 08:00:04,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16633 conditions, 7142 events. 5107/7142 cut-off events. For 1718/1718 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 38241 event pairs, 2994 based on Foata normal form. 0/4109 useless extension candidates. Maximal degree in co-relation 16585. Up to 6700 conditions per place. [2023-11-19 08:00:04,293 INFO L140 encePairwiseOnDemand]: 982/985 looper letters, 190 selfloop transitions, 13 changer transitions 0/206 dead transitions. [2023-11-19 08:00:04,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 206 transitions, 2324 flow [2023-11-19 08:00:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1290 transitions. [2023-11-19 08:00:04,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365482233502538 [2023-11-19 08:00:04,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1290 transitions. [2023-11-19 08:00:04,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1290 transitions. [2023-11-19 08:00:04,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:04,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1290 transitions. [2023-11-19 08:00:04,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 430.0) internal successors, (1290), 3 states have internal predecessors, (1290), 0 states have call successors, (0), 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 08:00:04,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 08:00:04,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 08:00:04,313 INFO L175 Difference]: Start difference. First operand has 108 places, 218 transitions, 2018 flow. Second operand 3 states and 1290 transitions. [2023-11-19 08:00:04,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 206 transitions, 2324 flow [2023-11-19 08:00:04,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 206 transitions, 2290 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-19 08:00:04,340 INFO L231 Difference]: Finished difference. Result has 104 places, 206 transitions, 1910 flow [2023-11-19 08:00:04,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1910, PETRI_PLACES=104, PETRI_TRANSITIONS=206} [2023-11-19 08:00:04,342 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 44 predicate places. [2023-11-19 08:00:04,342 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 206 transitions, 1910 flow [2023-11-19 08:00:04,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.3333333333333) internal successors, (1258), 3 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:04,343 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:04,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:00:04,343 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:00:04,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:04,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1455495974, now seen corresponding path program 1 times [2023-11-19 08:00:04,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:04,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908339241] [2023-11-19 08:00:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:00:04,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:04,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908339241] [2023-11-19 08:00:04,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908339241] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:04,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437560202] [2023-11-19 08:00:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:04,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:04,452 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:04,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:00:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:04,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:00:04,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:04,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:04,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437560202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:04,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:04,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 9 [2023-11-19 08:00:04,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047568501] [2023-11-19 08:00:04,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:04,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:00:04,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:00:04,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:00:05,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 985 [2023-11-19 08:00:05,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 206 transitions, 1910 flow. Second operand has 9 states, 9 states have (on average 384.22222222222223) internal successors, (3458), 9 states have internal predecessors, (3458), 0 states have call successors, (0), 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 08:00:05,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:05,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 985 [2023-11-19 08:00:05,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:06,848 INFO L124 PetriNetUnfolderBase]: 6747/9698 cut-off events. [2023-11-19 08:00:06,848 INFO L125 PetriNetUnfolderBase]: For 2195/2195 co-relation queries the response was YES. [2023-11-19 08:00:06,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22310 conditions, 9698 events. 6747/9698 cut-off events. For 2195/2195 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 57803 event pairs, 4122 based on Foata normal form. 188/6069 useless extension candidates. Maximal degree in co-relation 22262. Up to 6863 conditions per place. [2023-11-19 08:00:06,917 INFO L140 encePairwiseOnDemand]: 972/985 looper letters, 201 selfloop transitions, 77 changer transitions 3/284 dead transitions. [2023-11-19 08:00:06,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 284 transitions, 3071 flow [2023-11-19 08:00:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-19 08:00:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 5441 transitions. [2023-11-19 08:00:06,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945612762871646 [2023-11-19 08:00:06,937 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 5441 transitions. [2023-11-19 08:00:06,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 5441 transitions. [2023-11-19 08:00:06,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:06,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 5441 transitions. [2023-11-19 08:00:06,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 388.64285714285717) internal successors, (5441), 14 states have internal predecessors, (5441), 0 states have call successors, (0), 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 08:00:06,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 985.0) internal successors, (14775), 15 states have internal predecessors, (14775), 0 states have call successors, (0), 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 08:00:06,975 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 985.0) internal successors, (14775), 15 states have internal predecessors, (14775), 0 states have call successors, (0), 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 08:00:06,975 INFO L175 Difference]: Start difference. First operand has 104 places, 206 transitions, 1910 flow. Second operand 14 states and 5441 transitions. [2023-11-19 08:00:06,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 284 transitions, 3071 flow [2023-11-19 08:00:06,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 284 transitions, 3039 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:00:07,002 INFO L231 Difference]: Finished difference. Result has 118 places, 244 transitions, 2564 flow [2023-11-19 08:00:07,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2564, PETRI_PLACES=118, PETRI_TRANSITIONS=244} [2023-11-19 08:00:07,003 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 58 predicate places. [2023-11-19 08:00:07,003 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 244 transitions, 2564 flow [2023-11-19 08:00:07,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 384.22222222222223) internal successors, (3458), 9 states have internal predecessors, (3458), 0 states have call successors, (0), 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 08:00:07,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:07,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:07,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:07,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9c042f-5ce5-4d27-9975-68eab4d8f81f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 08:00:07,226 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:00:07,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:07,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2026904888, now seen corresponding path program 1 times [2023-11-19 08:00:07,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:07,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953125449] [2023-11-19 08:00:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:07,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:07,288 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 08:00:07,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:07,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953125449] [2023-11-19 08:00:07,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953125449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:07,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:07,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:07,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955432099] [2023-11-19 08:00:07,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:07,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:07,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:07,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:07,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:07,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 985 [2023-11-19 08:00:07,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 244 transitions, 2564 flow. Second operand has 3 states, 3 states have (on average 422.6666666666667) internal successors, (1268), 3 states have internal predecessors, (1268), 0 states have call successors, (0), 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 08:00:07,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:07,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 985 [2023-11-19 08:00:07,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:08,839 INFO L124 PetriNetUnfolderBase]: 5948/8613 cut-off events. [2023-11-19 08:00:08,840 INFO L125 PetriNetUnfolderBase]: For 3402/3789 co-relation queries the response was YES. [2023-11-19 08:00:08,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21675 conditions, 8613 events. 5948/8613 cut-off events. For 3402/3789 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 50877 event pairs, 3665 based on Foata normal form. 0/5586 useless extension candidates. Maximal degree in co-relation 21624. Up to 8381 conditions per place. [2023-11-19 08:00:08,903 INFO L140 encePairwiseOnDemand]: 983/985 looper letters, 239 selfloop transitions, 1 changer transitions 0/243 dead transitions. [2023-11-19 08:00:08,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 243 transitions, 3042 flow [2023-11-19 08:00:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:08,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1301 transitions. [2023-11-19 08:00:08,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4402707275803722 [2023-11-19 08:00:08,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1301 transitions. [2023-11-19 08:00:08,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1301 transitions. [2023-11-19 08:00:08,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:08,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1301 transitions. [2023-11-19 08:00:08,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.6666666666667) internal successors, (1301), 3 states have internal predecessors, (1301), 0 states have call successors, (0), 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 08:00:08,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 08:00:08,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 985.0) internal successors, (3940), 4 states have internal predecessors, (3940), 0 states have call successors, (0), 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 08:00:08,923 INFO L175 Difference]: Start difference. First operand has 118 places, 244 transitions, 2564 flow. Second operand 3 states and 1301 transitions. [2023-11-19 08:00:08,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 243 transitions, 3042 flow [2023-11-19 08:00:08,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 243 transitions, 2958 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:08,997 INFO L231 Difference]: Finished difference. Result has 118 places, 243 transitions, 2480 flow [2023-11-19 08:00:08,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=985, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2480, PETRI_PLACES=118, PETRI_TRANSITIONS=243} [2023-11-19 08:00:08,999 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 58 predicate places. [2023-11-19 08:00:08,999 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 243 transitions, 2480 flow [2023-11-19 08:00:08,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 422.6666666666667) internal successors, (1268), 3 states have internal predecessors, (1268), 0 states have call successors, (0), 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 08:00:09,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:09,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:09,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:00:09,000 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-19 08:00:09,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:09,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2026904892, now seen corresponding path program 1 times [2023-11-19 08:00:09,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:09,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498911421] [2023-11-19 08:00:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:09,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:09,072 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 08:00:09,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:09,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498911421] [2023-11-19 08:00:09,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498911421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:09,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:09,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:09,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163561509] [2023-11-19 08:00:09,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:09,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:09,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:09,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:09,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 985 [2023-11-19 08:00:09,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 243 transitions, 2480 flow. Second operand has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 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 08:00:09,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:09,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 985 [2023-11-19 08:00:09,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand