./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/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_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/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_573c6879-cee5-4fc1-a115-17118f40df88/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 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:25,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:25,425 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:43:25,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:25,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:25,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:25,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:25,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:25,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:25,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:25,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:25,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:25,463 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:25,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:25,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:43:25,465 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:25,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:25,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:25,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:25,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:43:25,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:25,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:43:25,476 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:43:25,476 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:43:25,478 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:25,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:43:25,479 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:25,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:25,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:25,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:25,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:25,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:25,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:25,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:43:25,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:25,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:25,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:25,484 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:43:25,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:25,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:25,485 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:25,485 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_573c6879-cee5-4fc1-a115-17118f40df88/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 [2023-11-19 07:43:25,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:25,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:25,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:25,797 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:25,797 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:25,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2023-11-19 07:43:29,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:29,255 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:29,255 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2023-11-19 07:43:29,268 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/data/ce035eb91/1a1139fe3f8a4da48c5ea97e3ee01a59/FLAGf63f83929 [2023-11-19 07:43:29,282 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/data/ce035eb91/1a1139fe3f8a4da48c5ea97e3ee01a59 [2023-11-19 07:43:29,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:29,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:29,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:29,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:29,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:29,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471ee96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29, skipping insertion in model container [2023-11-19 07:43:29,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:29,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:29,568 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:29,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:29,643 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:29,643 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:29,652 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:29,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29 WrapperNode [2023-11-19 07:43:29,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:29,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:29,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:29,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:29,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,725 INFO L138 Inliner]: procedures = 27, calls = 84, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 410 [2023-11-19 07:43:29,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:29,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:29,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:29,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:29,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:29,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:29,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:29,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:29,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (1/1) ... [2023-11-19 07:43:29,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:29,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:29,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:29,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:43:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:43:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:43:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:43:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:43:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:43:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:43:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:43:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:43:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:43:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:43:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:43:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:43:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:29,906 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 07:43:30,042 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:30,045 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:30,924 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:31,563 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:31,563 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-19 07:43:31,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:31 BoogieIcfgContainer [2023-11-19 07:43:31,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:31,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:31,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:31,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:31,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:29" (1/3) ... [2023-11-19 07:43:31,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719b83e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:31, skipping insertion in model container [2023-11-19 07:43:31,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:29" (2/3) ... [2023-11-19 07:43:31,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719b83e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:31, skipping insertion in model container [2023-11-19 07:43:31,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:31" (3/3) ... [2023-11-19 07:43:31,587 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-11-19 07:43:31,601 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:43:31,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:31,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-19 07:43:31,613 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:31,885 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:43:31,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 328 transitions, 684 flow [2023-11-19 07:43:32,175 INFO L124 PetriNetUnfolderBase]: 34/324 cut-off events. [2023-11-19 07:43:32,175 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:43:32,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 324 events. 34/324 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 360 event pairs, 0 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 262. Up to 3 conditions per place. [2023-11-19 07:43:32,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 328 transitions, 684 flow [2023-11-19 07:43:32,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 298 transitions, 617 flow [2023-11-19 07:43:32,209 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:32,228 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 298 transitions, 617 flow [2023-11-19 07:43:32,232 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 298 transitions, 617 flow [2023-11-19 07:43:32,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 298 transitions, 617 flow [2023-11-19 07:43:32,317 INFO L124 PetriNetUnfolderBase]: 33/298 cut-off events. [2023-11-19 07:43:32,317 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:43:32,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 298 events. 33/298 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 354 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 262. Up to 3 conditions per place. [2023-11-19 07:43:32,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 6244 [2023-11-19 07:43:51,415 INFO L134 LiptonReduction]: Checked pairs total: 9167 [2023-11-19 07:43:51,415 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-11-19 07:43:51,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:51,440 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;@346968d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:51,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-11-19 07:43:51,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:51,444 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:43:51,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:51,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:51,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:43:51,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 07:43:51,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash 55333, now seen corresponding path program 1 times [2023-11-19 07:43:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941973786] [2023-11-19 07:43:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:51,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:51,892 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 07:43:51,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:51,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941973786] [2023-11-19 07:43:51,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941973786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:51,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:51,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820011758] [2023-11-19 07:43:51,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:51,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:51,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:51,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:52,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 650 [2023-11-19 07:43:52,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:52,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:52,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 650 [2023-11-19 07:43:52,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:57,223 INFO L124 PetriNetUnfolderBase]: 21231/27866 cut-off events. [2023-11-19 07:43:57,223 INFO L125 PetriNetUnfolderBase]: For 1673/1673 co-relation queries the response was YES. [2023-11-19 07:43:57,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56326 conditions, 27866 events. 21231/27866 cut-off events. For 1673/1673 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 139122 event pairs, 18459 based on Foata normal form. 0/11920 useless extension candidates. Maximal degree in co-relation 47390. Up to 27262 conditions per place. [2023-11-19 07:43:57,506 INFO L140 encePairwiseOnDemand]: 626/650 looper letters, 53 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2023-11-19 07:43:57,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 265 flow [2023-11-19 07:43:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 818 transitions. [2023-11-19 07:43:57,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194871794871795 [2023-11-19 07:43:57,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 818 transitions. [2023-11-19 07:43:57,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 818 transitions. [2023-11-19 07:43:57,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:57,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 818 transitions. [2023-11-19 07:43:57,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 07:43:57,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states 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 07:43:57,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states 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 07:43:57,565 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 155 flow. Second operand 3 states and 818 transitions. [2023-11-19 07:43:57,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 265 flow [2023-11-19 07:43:57,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 252 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 07:43:57,606 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 184 flow [2023-11-19 07:43:57,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-11-19 07:43:57,612 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2023-11-19 07:43:57,612 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 184 flow [2023-11-19 07:43:57,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:57,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:57,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:43:57,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:57,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 07:43:57,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:57,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1717026, now seen corresponding path program 1 times [2023-11-19 07:43:57,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:57,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560970016] [2023-11-19 07:43:57,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:57,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:57,743 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 07:43:57,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:57,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560970016] [2023-11-19 07:43:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560970016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:57,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648271006] [2023-11-19 07:43:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:57,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:57,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:57,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:57,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:43:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:57,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:43:57,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:57,955 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 07:43:57,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:57,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648271006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:57,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:57,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 07:43:57,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307093044] [2023-11-19 07:43:57,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:57,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:57,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:57,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:57,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:58,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 650 [2023-11-19 07:43:58,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 07:43:58,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:58,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 650 [2023-11-19 07:43:58,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:02,254 INFO L124 PetriNetUnfolderBase]: 21231/27863 cut-off events. [2023-11-19 07:44:02,255 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2023-11-19 07:44:02,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55729 conditions, 27863 events. 21231/27863 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 139339 event pairs, 18459 based on Foata normal form. 0/11924 useless extension candidates. Maximal degree in co-relation 55670. Up to 27250 conditions per place. [2023-11-19 07:44:02,487 INFO L140 encePairwiseOnDemand]: 640/650 looper letters, 49 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-11-19 07:44:02,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 286 flow [2023-11-19 07:44:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:44:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:44:02,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1048 transitions. [2023-11-19 07:44:02,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40307692307692305 [2023-11-19 07:44:02,501 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1048 transitions. [2023-11-19 07:44:02,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1048 transitions. [2023-11-19 07:44:02,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:02,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1048 transitions. [2023-11-19 07:44:02,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states 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 07:44:02,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 650.0) internal successors, (3250), 5 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states 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 07:44:02,518 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 650.0) internal successors, (3250), 5 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states 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 07:44:02,518 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 184 flow. Second operand 4 states and 1048 transitions. [2023-11-19 07:44:02,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 286 flow [2023-11-19 07:44:02,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:02,522 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 174 flow [2023-11-19 07:44:02,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-11-19 07:44:02,524 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -16 predicate places. [2023-11-19 07:44:02,524 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 174 flow [2023-11-19 07:44:02,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 07:44:02,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:02,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:44:02,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:02,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:02,747 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 07:44:02,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1717025, now seen corresponding path program 1 times [2023-11-19 07:44:02,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:02,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898153391] [2023-11-19 07:44:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:02,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:02,882 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 07:44:02,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:02,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898153391] [2023-11-19 07:44:02,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898153391] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:02,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125484237] [2023-11-19 07:44:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:02,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:02,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:02,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:02,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:44:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:03,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:44:03,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:03,066 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 07:44:03,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:03,087 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 07:44:03,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125484237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:03,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:03,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:44:03,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635835689] [2023-11-19 07:44:03,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:03,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:44:03,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:44:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:44:03,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 650 [2023-11-19 07:44:03,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 248.14285714285714) internal successors, (1737), 7 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states 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 07:44:03,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:03,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 650 [2023-11-19 07:44:03,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:06,937 INFO L124 PetriNetUnfolderBase]: 21240/27881 cut-off events. [2023-11-19 07:44:06,937 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2023-11-19 07:44:06,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55793 conditions, 27881 events. 21240/27881 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 139344 event pairs, 18459 based on Foata normal form. 0/11943 useless extension candidates. Maximal degree in co-relation 55670. Up to 27262 conditions per place. [2023-11-19 07:44:07,134 INFO L140 encePairwiseOnDemand]: 640/650 looper letters, 50 selfloop transitions, 25 changer transitions 0/77 dead transitions. [2023-11-19 07:44:07,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 77 transitions, 414 flow [2023-11-19 07:44:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1566 transitions. [2023-11-19 07:44:07,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015384615384615 [2023-11-19 07:44:07,143 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1566 transitions. [2023-11-19 07:44:07,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1566 transitions. [2023-11-19 07:44:07,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:07,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1566 transitions. [2023-11-19 07:44:07,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:07,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 650.0) internal successors, (4550), 7 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states 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 07:44:07,170 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 650.0) internal successors, (4550), 7 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states 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 07:44:07,170 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 174 flow. Second operand 6 states and 1566 transitions. [2023-11-19 07:44:07,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 77 transitions, 414 flow [2023-11-19 07:44:07,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:07,177 INFO L231 Difference]: Finished difference. Result has 63 places, 77 transitions, 348 flow [2023-11-19 07:44:07,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=63, PETRI_TRANSITIONS=77} [2023-11-19 07:44:07,179 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-19 07:44:07,179 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 77 transitions, 348 flow [2023-11-19 07:44:07,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 248.14285714285714) internal successors, (1737), 7 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states 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 07:44:07,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:07,181 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:44:07,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:07,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:07,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 07:44:07,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash -385994908, now seen corresponding path program 2 times [2023-11-19 07:44:07,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:07,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192719435] [2023-11-19 07:44:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:07,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:07,613 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 07:44:07,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192719435] [2023-11-19 07:44:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192719435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617065231] [2023-11-19 07:44:07,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:44:07,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:07,616 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:07,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:44:07,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:44:07,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:44:07,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:44:07,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:07,804 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 07:44:07,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:07,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617065231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:07,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:44:07,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:44:07,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427824116] [2023-11-19 07:44:07,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:07,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:07,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:07,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:07,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:44:07,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 650 [2023-11-19 07:44:07,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 77 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 07:44:07,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:07,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 650 [2023-11-19 07:44:07,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:11,808 INFO L124 PetriNetUnfolderBase]: 21240/27880 cut-off events. [2023-11-19 07:44:11,808 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2023-11-19 07:44:11,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55832 conditions, 27880 events. 21240/27880 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 139337 event pairs, 18459 based on Foata normal form. 1/11947 useless extension candidates. Maximal degree in co-relation 55744. Up to 27275 conditions per place. [2023-11-19 07:44:12,182 INFO L140 encePairwiseOnDemand]: 647/650 looper letters, 68 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-11-19 07:44:12,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 76 transitions, 486 flow [2023-11-19 07:44:12,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:12,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2023-11-19 07:44:12,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2023-11-19 07:44:12,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2023-11-19 07:44:12,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2023-11-19 07:44:12,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:12,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2023-11-19 07:44:12,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 07:44:12,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states 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 07:44:12,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states 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 07:44:12,200 INFO L175 Difference]: Start difference. First operand has 63 places, 77 transitions, 348 flow. Second operand 3 states and 810 transitions. [2023-11-19 07:44:12,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 76 transitions, 486 flow [2023-11-19 07:44:12,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 449 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:12,206 INFO L231 Difference]: Finished difference. Result has 63 places, 76 transitions, 313 flow [2023-11-19 07:44:12,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=63, PETRI_TRANSITIONS=76} [2023-11-19 07:44:12,208 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-19 07:44:12,209 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 313 flow [2023-11-19 07:44:12,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 07:44:12,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:12,210 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-19 07:44:12,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:12,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:12,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 07:44:12,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:12,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1579440518, now seen corresponding path program 1 times [2023-11-19 07:44:12,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:12,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329889138] [2023-11-19 07:44:12,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:12,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:12,645 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 07:44:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:12,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329889138] [2023-11-19 07:44:12,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329889138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32129723] [2023-11-19 07:44:12,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:12,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:12,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:12,655 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:12,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573c6879-cee5-4fc1-a115-17118f40df88/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:44:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:12,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:44:12,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:12,853 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 07:44:12,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:12,912 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 07:44:12,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32129723] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:12,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:12,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:44:12,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667914905] [2023-11-19 07:44:12,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:12,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:44:12,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:12,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:44:12,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:44:13,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 650 [2023-11-19 07:44:13,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 313 flow. Second operand has 13 states, 13 states have (on average 248.15384615384616) internal successors, (3226), 13 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states 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 07:44:13,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:13,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 650 [2023-11-19 07:44:13,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand