./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ --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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:44:55,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:44:55,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 21:44:55,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:44:55,736 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:44:55,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:44:55,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:44:55,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:44:55,779 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:44:55,784 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:44:55,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:44:55,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:44:55,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:44:55,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:44:55,789 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:44:55,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:44:55,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:44:55,790 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:44:55,791 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:44:55,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:44:55,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:44:55,792 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:44:55,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:44:55,793 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:44:55,793 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:44:55,794 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:44:55,794 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:44:55,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:44:55,795 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:44:55,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:44:55,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:44:55,798 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:44:55,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:44:55,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:44:55,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:44:55,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:44:55,800 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:44:55,800 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:44:55,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:44:55,801 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:44:55,801 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:44:55,802 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:44:55,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:44:55,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:44:55,803 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_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2023-11-23 21:44:56,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:44:56,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:44:56,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:44:56,179 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:44:56,180 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:44:56,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-23 21:44:59,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:44:59,600 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:44:59,600 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-23 21:44:59,610 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/data/29295f5c4/b356c35698c4426ba1fc5688f5aeabc5/FLAGfb8088ce0 [2023-11-23 21:44:59,936 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/data/29295f5c4/b356c35698c4426ba1fc5688f5aeabc5 [2023-11-23 21:44:59,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:44:59,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:44:59,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:44:59,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:44:59,948 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:44:59,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:44:59" (1/1) ... [2023-11-23 21:44:59,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366095b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:59, skipping insertion in model container [2023-11-23 21:44:59,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:44:59" (1/1) ... [2023-11-23 21:45:00,003 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:45:00,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:45:00,316 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:45:00,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:45:00,369 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:45:00,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00 WrapperNode [2023-11-23 21:45:00,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:45:00,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:45:00,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:45:00,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:45:00,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,420 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 195 [2023-11-23 21:45:00,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:45:00,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:45:00,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:45:00,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:45:00,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,439 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,458 INFO L189 HeapSplitter]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2] [2023-11-23 21:45:00,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:45:00,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:45:00,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:45:00,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:45:00,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (1/1) ... [2023-11-23 21:45:00,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:45:00,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:45:00,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:45:00,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:45:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:45:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:45:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:45:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:45:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:45:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 21:45:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 21:45:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:45:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:45:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 21:45:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 21:45:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 21:45:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 21:45:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 21:45:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 21:45:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 21:45:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 21:45:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 21:45:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:45:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:45:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:45:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 21:45:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 21:45:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:45:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:45:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:45:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:45:00,615 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:45:00,790 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:45:00,793 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:45:01,574 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:45:02,006 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:45:02,006 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 21:45:02,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:45:02 BoogieIcfgContainer [2023-11-23 21:45:02,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:45:02,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:45:02,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:45:02,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:45:02,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:44:59" (1/3) ... [2023-11-23 21:45:02,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b40768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:45:02, skipping insertion in model container [2023-11-23 21:45:02,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:45:00" (2/3) ... [2023-11-23 21:45:02,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b40768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:45:02, skipping insertion in model container [2023-11-23 21:45:02,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:45:02" (3/3) ... [2023-11-23 21:45:02,020 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-11-23 21:45:02,031 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:45:02,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:45:02,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-23 21:45:02,044 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:45:02,148 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:45:02,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 91 transitions, 203 flow [2023-11-23 21:45:02,267 INFO L124 PetriNetUnfolderBase]: 15/88 cut-off events. [2023-11-23 21:45:02,267 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 21:45:02,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 15/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2023-11-23 21:45:02,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 91 transitions, 203 flow [2023-11-23 21:45:02,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 86 transitions, 187 flow [2023-11-23 21:45:02,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:45:02,309 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;@78af8a9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:45:02,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-23 21:45:02,316 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:45:02,317 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-23 21:45:02,317 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:45:02,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:02,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 21:45:02,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-23 21:45:02,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash 824211, now seen corresponding path program 1 times [2023-11-23 21:45:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:45:02,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665732552] [2023-11-23 21:45:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:02,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:45:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:02,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:45:02,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665732552] [2023-11-23 21:45:02,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665732552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:02,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:02,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:45:02,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253299131] [2023-11-23 21:45:02,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:02,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:45:02,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:45:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:45:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:45:02,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-23 21:45:02,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:02,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:02,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-23 21:45:02,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:03,867 INFO L124 PetriNetUnfolderBase]: 4173/6870 cut-off events. [2023-11-23 21:45:03,867 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2023-11-23 21:45:03,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12439 conditions, 6870 events. 4173/6870 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 43544 event pairs, 2653 based on Foata normal form. 3/4813 useless extension candidates. Maximal degree in co-relation 11334. Up to 5339 conditions per place. [2023-11-23 21:45:03,948 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 55 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2023-11-23 21:45:03,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 335 flow [2023-11-23 21:45:03,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:45:03,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:45:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2023-11-23 21:45:03,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-11-23 21:45:03,966 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 203 transitions. [2023-11-23 21:45:03,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 203 transitions. [2023-11-23 21:45:03,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:03,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 203 transitions. [2023-11-23 21:45:03,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:03,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:03,983 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:03,985 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 187 flow. Second operand 4 states and 203 transitions. [2023-11-23 21:45:03,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 335 flow [2023-11-23 21:45:03,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 95 transitions, 326 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-23 21:45:04,005 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 266 flow [2023-11-23 21:45:04,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2023-11-23 21:45:04,012 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2023-11-23 21:45:04,012 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 266 flow [2023-11-23 21:45:04,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:04,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:04,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 21:45:04,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:45:04,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-23 21:45:04,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1214952909, now seen corresponding path program 1 times [2023-11-23 21:45:04,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:45:04,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468269819] [2023-11-23 21:45:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:04,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:45:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:04,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:45:04,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468269819] [2023-11-23 21:45:04,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468269819] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:45:04,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412665979] [2023-11-23 21:45:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:04,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:45:04,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:45:04,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:45:04,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:45:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:04,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:45:04,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:04,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:04,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412665979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:04,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:45:04,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 21:45:04,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991618909] [2023-11-23 21:45:04,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:04,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:45:04,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:45:04,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:45:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:45:04,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-23 21:45:04,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:04,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:04,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-23 21:45:04,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:05,545 INFO L124 PetriNetUnfolderBase]: 4173/6867 cut-off events. [2023-11-23 21:45:05,546 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-23 21:45:05,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12384 conditions, 6867 events. 4173/6867 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 43543 event pairs, 2653 based on Foata normal form. 3/4815 useless extension candidates. Maximal degree in co-relation 12311. Up to 5324 conditions per place. [2023-11-23 21:45:05,629 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 45 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2023-11-23 21:45:05,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 92 transitions, 378 flow [2023-11-23 21:45:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:45:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:45:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2023-11-23 21:45:05,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816849816849817 [2023-11-23 21:45:05,645 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 263 transitions. [2023-11-23 21:45:05,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 263 transitions. [2023-11-23 21:45:05,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:05,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 263 transitions. [2023-11-23 21:45:05,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:05,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:05,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:05,655 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 266 flow. Second operand 6 states and 263 transitions. [2023-11-23 21:45:05,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 92 transitions, 378 flow [2023-11-23 21:45:05,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:45:05,661 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 288 flow [2023-11-23 21:45:05,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-11-23 21:45:05,663 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2023-11-23 21:45:05,663 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 288 flow [2023-11-23 21:45:05,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:05,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:05,664 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 21:45:05,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:45:05,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:45:05,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-23 21:45:05,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:05,879 INFO L85 PathProgramCache]: Analyzing trace with hash 991166271, now seen corresponding path program 1 times [2023-11-23 21:45:05,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:45:05,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865634747] [2023-11-23 21:45:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:05,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:45:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:06,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:45:06,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865634747] [2023-11-23 21:45:06,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865634747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:45:06,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658115399] [2023-11-23 21:45:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:06,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:45:06,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:45:06,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:45:06,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:45:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:06,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:45:06,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:06,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:45:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:06,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658115399] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:45:06,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:45:06,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-23 21:45:06,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140344072] [2023-11-23 21:45:06,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:45:06,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:45:06,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:45:06,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:45:06,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:45:06,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-23 21:45:06,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:06,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:06,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-23 21:45:06,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:07,515 INFO L124 PetriNetUnfolderBase]: 4182/6903 cut-off events. [2023-11-23 21:45:07,516 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-23 21:45:07,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12525 conditions, 6903 events. 4182/6903 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 43939 event pairs, 2653 based on Foata normal form. 9/4857 useless extension candidates. Maximal degree in co-relation 12313. Up to 5339 conditions per place. [2023-11-23 21:45:07,601 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 52 selfloop transitions, 37 changer transitions 0/119 dead transitions. [2023-11-23 21:45:07,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 640 flow [2023-11-23 21:45:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:45:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 21:45:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 428 transitions. [2023-11-23 21:45:07,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703296703296703 [2023-11-23 21:45:07,607 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 428 transitions. [2023-11-23 21:45:07,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 428 transitions. [2023-11-23 21:45:07,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:07,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 428 transitions. [2023-11-23 21:45:07,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.8) internal successors, (428), 10 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:07,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:07,615 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:07,616 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 288 flow. Second operand 10 states and 428 transitions. [2023-11-23 21:45:07,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 119 transitions, 640 flow [2023-11-23 21:45:07,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 557 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-23 21:45:07,675 INFO L231 Difference]: Finished difference. Result has 91 places, 119 transitions, 503 flow [2023-11-23 21:45:07,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=503, PETRI_PLACES=91, PETRI_TRANSITIONS=119} [2023-11-23 21:45:07,676 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2023-11-23 21:45:07,676 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 119 transitions, 503 flow [2023-11-23 21:45:07,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:07,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:07,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:07,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:45:07,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3abc57-2459-47ce-993d-f8ec64f514bb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:45:07,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-23 21:45:07,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:07,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1581287754, now seen corresponding path program 1 times [2023-11-23 21:45:07,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:45:07,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284483862] [2023-11-23 21:45:07,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:07,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:45:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:07,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:45:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284483862] [2023-11-23 21:45:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284483862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:08,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:08,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:45:08,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46481704] [2023-11-23 21:45:08,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:08,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:45:08,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:45:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:45:08,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:45:08,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2023-11-23 21:45:08,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 119 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:08,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:08,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2023-11-23 21:45:08,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:09,318 INFO L124 PetriNetUnfolderBase]: 7387/11136 cut-off events. [2023-11-23 21:45:09,319 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2023-11-23 21:45:09,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21164 conditions, 11136 events. 7387/11136 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 65242 event pairs, 3613 based on Foata normal form. 146/8108 useless extension candidates. Maximal degree in co-relation 21066. Up to 7218 conditions per place. [2023-11-23 21:45:09,416 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 141 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-11-23 21:45:09,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 175 transitions, 911 flow [2023-11-23 21:45:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:45:09,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:45:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-23 21:45:09,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-23 21:45:09,423 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-23 21:45:09,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-23 21:45:09,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:09,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-23 21:45:09,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:09,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:09,427 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:09,427 INFO L175 Difference]: Start difference. First operand has 91 places, 119 transitions, 503 flow. Second operand 4 states and 255 transitions. [2023-11-23 21:45:09,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 175 transitions, 911 flow [2023-11-23 21:45:09,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 175 transitions, 874 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-23 21:45:09,440 INFO L231 Difference]: Finished difference. Result has 94 places, 122 transitions, 495 flow [2023-11-23 21:45:09,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=495, PETRI_PLACES=94, PETRI_TRANSITIONS=122} [2023-11-23 21:45:09,443 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2023-11-23 21:45:09,443 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 122 transitions, 495 flow [2023-11-23 21:45:09,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:09,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:09,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:09,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:45:09,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-23 21:45:09,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:09,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1775247485, now seen corresponding path program 1 times [2023-11-23 21:45:09,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:45:09,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311250177] [2023-11-23 21:45:09,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:09,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:45:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:09,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:45:09,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311250177] [2023-11-23 21:45:09,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311250177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:09,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:09,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:45:09,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474301634] [2023-11-23 21:45:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:09,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:45:09,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:45:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:45:09,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:45:09,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-23 21:45:09,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 122 transitions, 495 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:09,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:09,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-23 21:45:09,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:12,453 INFO L124 PetriNetUnfolderBase]: 13891/22893 cut-off events. [2023-11-23 21:45:12,454 INFO L125 PetriNetUnfolderBase]: For 2780/2780 co-relation queries the response was YES. [2023-11-23 21:45:12,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43690 conditions, 22893 events. 13891/22893 cut-off events. For 2780/2780 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 172626 event pairs, 8506 based on Foata normal form. 230/17108 useless extension candidates. Maximal degree in co-relation 43566. Up to 8887 conditions per place. [2023-11-23 21:45:12,661 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 137 selfloop transitions, 11 changer transitions 0/180 dead transitions. [2023-11-23 21:45:12,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 180 transitions, 990 flow [2023-11-23 21:45:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:45:12,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:45:12,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 325 transitions. [2023-11-23 21:45:12,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2023-11-23 21:45:12,664 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 325 transitions. [2023-11-23 21:45:12,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 325 transitions. [2023-11-23 21:45:12,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:12,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 325 transitions. [2023-11-23 21:45:12,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:12,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:12,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:12,668 INFO L175 Difference]: Start difference. First operand has 94 places, 122 transitions, 495 flow. Second operand 6 states and 325 transitions. [2023-11-23 21:45:12,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 180 transitions, 990 flow [2023-11-23 21:45:12,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 985 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:45:12,682 INFO L231 Difference]: Finished difference. Result has 101 places, 125 transitions, 550 flow [2023-11-23 21:45:12,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=101, PETRI_TRANSITIONS=125} [2023-11-23 21:45:12,685 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 20 predicate places. [2023-11-23 21:45:12,685 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 125 transitions, 550 flow [2023-11-23 21:45:12,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:12,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:12,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:12,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:45:12,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-23 21:45:12,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash 505037858, now seen corresponding path program 1 times [2023-11-23 21:45:12,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:45:12,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527271818] [2023-11-23 21:45:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:12,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:45:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:12,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:45:12,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527271818] [2023-11-23 21:45:12,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527271818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:12,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:12,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:45:12,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004436169] [2023-11-23 21:45:12,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:12,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:45:12,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:45:12,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:45:12,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:45:12,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2023-11-23 21:45:12,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 125 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:12,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:12,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2023-11-23 21:45:12,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:16,130 INFO L124 PetriNetUnfolderBase]: 22828/33916 cut-off events. [2023-11-23 21:45:16,130 INFO L125 PetriNetUnfolderBase]: For 4107/4467 co-relation queries the response was YES. [2023-11-23 21:45:16,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68209 conditions, 33916 events. 22828/33916 cut-off events. For 4107/4467 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 223258 event pairs, 10962 based on Foata normal form. 464/26531 useless extension candidates. Maximal degree in co-relation 68080. Up to 21780 conditions per place. [2023-11-23 21:45:16,376 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 149 selfloop transitions, 4 changer transitions 0/185 dead transitions. [2023-11-23 21:45:16,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 185 transitions, 1006 flow [2023-11-23 21:45:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:45:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:45:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-23 21:45:16,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-23 21:45:16,379 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-23 21:45:16,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-23 21:45:16,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:16,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-23 21:45:16,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:16,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:16,382 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:16,383 INFO L175 Difference]: Start difference. First operand has 101 places, 125 transitions, 550 flow. Second operand 4 states and 255 transitions. [2023-11-23 21:45:16,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 185 transitions, 1006 flow [2023-11-23 21:45:16,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 185 transitions, 1003 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-23 21:45:16,393 INFO L231 Difference]: Finished difference. Result has 105 places, 128 transitions, 576 flow [2023-11-23 21:45:16,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=576, PETRI_PLACES=105, PETRI_TRANSITIONS=128} [2023-11-23 21:45:16,396 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 24 predicate places. [2023-11-23 21:45:16,397 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 128 transitions, 576 flow [2023-11-23 21:45:16,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:16,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:16,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:16,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:45:16,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-23 21:45:16,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash 801903704, now seen corresponding path program 1 times [2023-11-23 21:45:16,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:45:16,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885104931] [2023-11-23 21:45:16,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:16,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:45:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:16,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:45:16,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885104931] [2023-11-23 21:45:16,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885104931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:16,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:16,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:45:16,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732787187] [2023-11-23 21:45:16,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:16,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:45:16,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:45:16,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:45:16,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:45:16,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-23 21:45:16,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 128 transitions, 576 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:16,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:16,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-23 21:45:16,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:23,180 INFO L124 PetriNetUnfolderBase]: 40704/67820 cut-off events. [2023-11-23 21:45:23,180 INFO L125 PetriNetUnfolderBase]: For 18951/19023 co-relation queries the response was YES. [2023-11-23 21:45:23,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138653 conditions, 67820 events. 40704/67820 cut-off events. For 18951/19023 co-relation queries the response was YES. Maximal size of possible extension queue 2553. Compared 590888 event pairs, 24964 based on Foata normal form. 656/55304 useless extension candidates. Maximal degree in co-relation 138437. Up to 25508 conditions per place. [2023-11-23 21:45:23,813 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 166 selfloop transitions, 7 changer transitions 0/206 dead transitions. [2023-11-23 21:45:23,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 206 transitions, 1268 flow [2023-11-23 21:45:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:45:23,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:45:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2023-11-23 21:45:23,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2023-11-23 21:45:23,817 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 294 transitions. [2023-11-23 21:45:23,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 294 transitions. [2023-11-23 21:45:23,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:23,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 294 transitions. [2023-11-23 21:45:23,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.8) internal successors, (294), 5 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:23,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:23,821 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:23,821 INFO L175 Difference]: Start difference. First operand has 105 places, 128 transitions, 576 flow. Second operand 5 states and 294 transitions. [2023-11-23 21:45:23,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 206 transitions, 1268 flow [2023-11-23 21:45:23,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 206 transitions, 1263 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:45:23,886 INFO L231 Difference]: Finished difference. Result has 111 places, 132 transitions, 644 flow [2023-11-23 21:45:23,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=111, PETRI_TRANSITIONS=132} [2023-11-23 21:45:23,887 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 30 predicate places. [2023-11-23 21:45:23,888 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 132 transitions, 644 flow [2023-11-23 21:45:23,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:23,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:23,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:23,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:45:23,889 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-23 21:45:23,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1523662934, now seen corresponding path program 1 times [2023-11-23 21:45:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:45:23,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531875358] [2023-11-23 21:45:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:23,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:45:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:45:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531875358] [2023-11-23 21:45:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531875358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:24,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:24,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:45:24,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942041449] [2023-11-23 21:45:24,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:24,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:45:24,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:45:24,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:45:24,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:45:24,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-23 21:45:24,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 132 transitions, 644 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:24,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:24,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-23 21:45:24,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:36,891 INFO L124 PetriNetUnfolderBase]: 85076/139956 cut-off events. [2023-11-23 21:45:36,891 INFO L125 PetriNetUnfolderBase]: For 26148/26292 co-relation queries the response was YES. [2023-11-23 21:45:37,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280234 conditions, 139956 events. 85076/139956 cut-off events. For 26148/26292 co-relation queries the response was YES. Maximal size of possible extension queue 5007. Compared 1307368 event pairs, 52104 based on Foata normal form. 984/111142 useless extension candidates. Maximal degree in co-relation 280016. Up to 54048 conditions per place. [2023-11-23 21:45:38,346 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 129 selfloop transitions, 13 changer transitions 0/177 dead transitions. [2023-11-23 21:45:38,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 177 transitions, 1048 flow [2023-11-23 21:45:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:45:38,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:45:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 282 transitions. [2023-11-23 21:45:38,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197802197802198 [2023-11-23 21:45:38,349 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 282 transitions. [2023-11-23 21:45:38,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 282 transitions. [2023-11-23 21:45:38,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:38,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 282 transitions. [2023-11-23 21:45:38,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:38,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:38,353 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:38,353 INFO L175 Difference]: Start difference. First operand has 111 places, 132 transitions, 644 flow. Second operand 5 states and 282 transitions. [2023-11-23 21:45:38,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 177 transitions, 1048 flow [2023-11-23 21:45:38,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 177 transitions, 1046 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-23 21:45:38,523 INFO L231 Difference]: Finished difference. Result has 117 places, 133 transitions, 688 flow [2023-11-23 21:45:38,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=688, PETRI_PLACES=117, PETRI_TRANSITIONS=133} [2023-11-23 21:45:38,524 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2023-11-23 21:45:38,524 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 133 transitions, 688 flow [2023-11-23 21:45:38,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:38,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:38,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:38,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:45:38,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-23 21:45:38,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 11090212, now seen corresponding path program 1 times [2023-11-23 21:45:38,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:45:38,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585930182] [2023-11-23 21:45:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:45:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:38,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:45:38,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585930182] [2023-11-23 21:45:38,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585930182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:38,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:38,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:45:38,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925570439] [2023-11-23 21:45:38,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:38,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:45:38,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:45:38,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:45:38,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:45:38,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-23 21:45:38,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 133 transitions, 688 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:38,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:38,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-23 21:45:38,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand