./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-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_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/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_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/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_4e8bc69e-50b8-4647-823b-e690efb89ec2/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 2a508120cc7913f10b79dda7ca65a8b88f829725798d520aee5d1c1d04a1fc13 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:29:30,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:29:30,489 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:29:30,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:29:30,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:29:30,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:29:30,526 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:29:30,526 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:29:30,527 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:29:30,528 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:29:30,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:29:30,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:29:30,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:29:30,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:29:30,532 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:29:30,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:29:30,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:29:30,534 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:29:30,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:29:30,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:29:30,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:29:30,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:29:30,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:29:30,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:29:30,537 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:29:30,537 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:29:30,538 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:29:30,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:29:30,539 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:29:30,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:29:30,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:29:30,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:29:30,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:29:30,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:29:30,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:29:30,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:29:30,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:29:30,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:29:30,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:29:30,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:29:30,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:29:30,544 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:29:30,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:29:30,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:29:30,545 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_4e8bc69e-50b8-4647-823b-e690efb89ec2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a508120cc7913f10b79dda7ca65a8b88f829725798d520aee5d1c1d04a1fc13 [2023-11-23 22:29:30,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:29:30,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:29:30,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:29:30,855 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:29:30,856 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:29:30,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2023-11-23 22:29:34,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:29:34,362 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:29:34,362 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2023-11-23 22:29:34,371 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ/data/1bbbe2815/061ed17632524a89b916d4c6e64f0fb9/FLAG7be6fca38 [2023-11-23 22:29:34,387 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ/data/1bbbe2815/061ed17632524a89b916d4c6e64f0fb9 [2023-11-23 22:29:34,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:29:34,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:29:34,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:29:34,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:29:34,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:29:34,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555d2e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34, skipping insertion in model container [2023-11-23 22:29:34,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:29:34,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:29:34,641 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:29:34,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:29:34,691 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:29:34,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34 WrapperNode [2023-11-23 22:29:34,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:29:34,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:29:34,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:29:34,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:29:34,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,751 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 228 [2023-11-23 22:29:34,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:29:34,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:29:34,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:29:34,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:29:34,766 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,771 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,788 INFO L189 HeapSplitter]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2] [2023-11-23 22:29:34,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:29:34,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:29:34,843 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:29:34,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:29:34,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:29:34,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:34,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:29:34,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8bc69e-50b8-4647-823b-e690efb89ec2/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:29:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:29:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 22:29:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 22:29:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 22:29:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 22:29:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 22:29:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 22:29:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:29:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:29:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:29:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:29:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:29:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:29:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:29:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:29:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:29:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:29:34,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:29:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:29:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:29:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:29:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:29:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:29:34,936 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 22:29:35,099 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:29:35,102 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:29:35,667 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:29:36,056 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:29:36,056 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:29:36,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:29:36 BoogieIcfgContainer [2023-11-23 22:29:36,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:29:36,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:29:36,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:29:36,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:29:36,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:29:34" (1/3) ... [2023-11-23 22:29:36,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121d4f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:29:36, skipping insertion in model container [2023-11-23 22:29:36,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (2/3) ... [2023-11-23 22:29:36,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121d4f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:29:36, skipping insertion in model container [2023-11-23 22:29:36,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:29:36" (3/3) ... [2023-11-23 22:29:36,067 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2023-11-23 22:29:36,078 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:29:36,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:29:36,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-23 22:29:36,090 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:29:36,203 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 22:29:36,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 100 transitions, 221 flow [2023-11-23 22:29:36,332 INFO L124 PetriNetUnfolderBase]: 15/97 cut-off events. [2023-11-23 22:29:36,333 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 22:29:36,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 97 events. 15/97 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 351 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-23 22:29:36,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 100 transitions, 221 flow [2023-11-23 22:29:36,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 95 transitions, 205 flow [2023-11-23 22:29:36,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:29:36,381 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;@3180198a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:29:36,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-23 22:29:36,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:29:36,404 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2023-11-23 22:29:36,404 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:29:36,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:36,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:36,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:29:36,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:36,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1550401623, now seen corresponding path program 1 times [2023-11-23 22:29:36,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:36,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760059328] [2023-11-23 22:29:36,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:36,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:36,820 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 22:29:36,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:36,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760059328] [2023-11-23 22:29:36,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760059328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:36,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:36,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:29:36,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683771257] [2023-11-23 22:29:36,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:36,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:36,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:36,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 100 [2023-11-23 22:29:36,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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 22:29:36,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:36,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 100 [2023-11-23 22:29:36,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:39,794 INFO L124 PetriNetUnfolderBase]: 11378/18181 cut-off events. [2023-11-23 22:29:39,794 INFO L125 PetriNetUnfolderBase]: For 290/290 co-relation queries the response was YES. [2023-11-23 22:29:39,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33686 conditions, 18181 events. 11378/18181 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 144805 event pairs, 4176 based on Foata normal form. 444/15245 useless extension candidates. Maximal degree in co-relation 32117. Up to 8049 conditions per place. [2023-11-23 22:29:40,008 INFO L140 encePairwiseOnDemand]: 92/100 looper letters, 95 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2023-11-23 22:29:40,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 148 transitions, 523 flow [2023-11-23 22:29:40,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:40,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:29:40,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-11-23 22:29:40,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7675 [2023-11-23 22:29:40,024 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-11-23 22:29:40,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-11-23 22:29:40,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:40,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-11-23 22:29:40,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 22:29:40,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:40,043 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:40,045 INFO L175 Difference]: Start difference. First operand has 90 places, 95 transitions, 205 flow. Second operand 4 states and 307 transitions. [2023-11-23 22:29:40,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 148 transitions, 523 flow [2023-11-23 22:29:40,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 148 transitions, 508 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-23 22:29:40,134 INFO L231 Difference]: Finished difference. Result has 90 places, 97 transitions, 230 flow [2023-11-23 22:29:40,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=90, PETRI_TRANSITIONS=97} [2023-11-23 22:29:40,141 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-11-23 22:29:40,141 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 97 transitions, 230 flow [2023-11-23 22:29:40,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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 22:29:40,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:40,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:40,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:29:40,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:29:40,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:40,144 INFO L85 PathProgramCache]: Analyzing trace with hash 817810807, now seen corresponding path program 1 times [2023-11-23 22:29:40,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:40,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198795673] [2023-11-23 22:29:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:40,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:40,344 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 22:29:40,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:40,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198795673] [2023-11-23 22:29:40,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198795673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:40,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:40,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:29:40,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777187822] [2023-11-23 22:29:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:40,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:40,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:40,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 100 [2023-11-23 22:29:40,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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 22:29:40,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:40,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 100 [2023-11-23 22:29:40,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:42,404 INFO L124 PetriNetUnfolderBase]: 8509/15335 cut-off events. [2023-11-23 22:29:42,405 INFO L125 PetriNetUnfolderBase]: For 2854/2874 co-relation queries the response was YES. [2023-11-23 22:29:42,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29797 conditions, 15335 events. 8509/15335 cut-off events. For 2854/2874 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 135812 event pairs, 2509 based on Foata normal form. 20/13239 useless extension candidates. Maximal degree in co-relation 17062. Up to 6222 conditions per place. [2023-11-23 22:29:42,650 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 65 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2023-11-23 22:29:42,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 419 flow [2023-11-23 22:29:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:29:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2023-11-23 22:29:42,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.71 [2023-11-23 22:29:42,658 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 284 transitions. [2023-11-23 22:29:42,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 284 transitions. [2023-11-23 22:29:42,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:42,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 284 transitions. [2023-11-23 22:29:42,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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 22:29:42,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:42,670 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:42,671 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 230 flow. Second operand 4 states and 284 transitions. [2023-11-23 22:29:42,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 419 flow [2023-11-23 22:29:42,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 121 transitions, 419 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:29:42,812 INFO L231 Difference]: Finished difference. Result has 92 places, 96 transitions, 236 flow [2023-11-23 22:29:42,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=92, PETRI_TRANSITIONS=96} [2023-11-23 22:29:42,820 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2023-11-23 22:29:42,821 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 236 flow [2023-11-23 22:29:42,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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 22:29:42,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:42,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:42,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:29:42,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:29:42,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:42,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1970914816, now seen corresponding path program 1 times [2023-11-23 22:29:42,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:42,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99619470] [2023-11-23 22:29:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:42,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:42,973 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 22:29:42,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:42,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99619470] [2023-11-23 22:29:42,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99619470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:42,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:42,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:29:42,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319952848] [2023-11-23 22:29:42,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:42,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:42,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:42,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:42,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:42,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 100 [2023-11-23 22:29:43,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 22:29:43,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:43,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 100 [2023-11-23 22:29:43,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:46,072 INFO L124 PetriNetUnfolderBase]: 13820/23166 cut-off events. [2023-11-23 22:29:46,073 INFO L125 PetriNetUnfolderBase]: For 7387/8100 co-relation queries the response was YES. [2023-11-23 22:29:46,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46483 conditions, 23166 events. 13820/23166 cut-off events. For 7387/8100 co-relation queries the response was YES. Maximal size of possible extension queue 1371. Compared 201192 event pairs, 5037 based on Foata normal form. 925/20199 useless extension candidates. Maximal degree in co-relation 28076. Up to 9555 conditions per place. [2023-11-23 22:29:46,331 INFO L140 encePairwiseOnDemand]: 92/100 looper letters, 101 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2023-11-23 22:29:46,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 153 transitions, 616 flow [2023-11-23 22:29:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:29:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-11-23 22:29:46,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7675 [2023-11-23 22:29:46,335 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-11-23 22:29:46,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-11-23 22:29:46,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:46,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-11-23 22:29:46,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 22:29:46,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:46,339 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:46,340 INFO L175 Difference]: Start difference. First operand has 92 places, 96 transitions, 236 flow. Second operand 4 states and 307 transitions. [2023-11-23 22:29:46,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 153 transitions, 616 flow [2023-11-23 22:29:46,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 153 transitions, 596 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 22:29:46,518 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 262 flow [2023-11-23 22:29:46,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2023-11-23 22:29:46,521 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 4 predicate places. [2023-11-23 22:29:46,521 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 262 flow [2023-11-23 22:29:46,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 22:29:46,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:46,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:46,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:29:46,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:29:46,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash -417699781, now seen corresponding path program 1 times [2023-11-23 22:29:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:46,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506256020] [2023-11-23 22:29:46,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:46,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:46,593 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 22:29:46,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:46,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506256020] [2023-11-23 22:29:46,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506256020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:46,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:46,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:29:46,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224927833] [2023-11-23 22:29:46,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:46,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:46,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:46,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:46,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 100 [2023-11-23 22:29:46,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 22:29:46,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:46,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 100 [2023-11-23 22:29:46,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:48,723 INFO L124 PetriNetUnfolderBase]: 10152/18854 cut-off events. [2023-11-23 22:29:48,723 INFO L125 PetriNetUnfolderBase]: For 7602/8150 co-relation queries the response was YES. [2023-11-23 22:29:48,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38877 conditions, 18854 events. 10152/18854 cut-off events. For 7602/8150 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 175876 event pairs, 3053 based on Foata normal form. 552/17045 useless extension candidates. Maximal degree in co-relation 23512. Up to 7650 conditions per place. [2023-11-23 22:29:48,902 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 70 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2023-11-23 22:29:48,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 124 transitions, 481 flow [2023-11-23 22:29:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:29:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-11-23 22:29:48,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-23 22:29:48,905 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-11-23 22:29:48,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-11-23 22:29:48,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:48,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-11-23 22:29:48,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 22:29:48,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:48,908 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:48,908 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 262 flow. Second operand 4 states and 280 transitions. [2023-11-23 22:29:48,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 124 transitions, 481 flow [2023-11-23 22:29:49,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 124 transitions, 481 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:29:49,045 INFO L231 Difference]: Finished difference. Result has 96 places, 97 transitions, 266 flow [2023-11-23 22:29:49,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=96, PETRI_TRANSITIONS=97} [2023-11-23 22:29:49,048 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 6 predicate places. [2023-11-23 22:29:49,048 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 97 transitions, 266 flow [2023-11-23 22:29:49,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 22:29:49,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:49,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:49,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:29:49,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:29:49,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:49,050 INFO L85 PathProgramCache]: Analyzing trace with hash -968816374, now seen corresponding path program 1 times [2023-11-23 22:29:49,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:49,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136094516] [2023-11-23 22:29:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:49,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:49,142 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 22:29:49,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136094516] [2023-11-23 22:29:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136094516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:49,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:49,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:29:49,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96268497] [2023-11-23 22:29:49,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:49,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:49,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:49,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:49,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:49,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 100 [2023-11-23 22:29:49,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 97 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 22:29:49,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:49,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 100 [2023-11-23 22:29:49,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:50,999 INFO L124 PetriNetUnfolderBase]: 10181/19204 cut-off events. [2023-11-23 22:29:50,999 INFO L125 PetriNetUnfolderBase]: For 8951/9229 co-relation queries the response was YES. [2023-11-23 22:29:51,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40089 conditions, 19204 events. 10181/19204 cut-off events. For 8951/9229 co-relation queries the response was YES. Maximal size of possible extension queue 1193. Compared 182340 event pairs, 2836 based on Foata normal form. 278/17121 useless extension candidates. Maximal degree in co-relation 24913. Up to 7824 conditions per place. [2023-11-23 22:29:51,330 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 69 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2023-11-23 22:29:51,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 123 transitions, 491 flow [2023-11-23 22:29:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:29:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2023-11-23 22:29:51,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.71 [2023-11-23 22:29:51,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 284 transitions. [2023-11-23 22:29:51,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 284 transitions. [2023-11-23 22:29:51,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:51,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 284 transitions. [2023-11-23 22:29:51,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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 22:29:51,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:51,339 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:51,339 INFO L175 Difference]: Start difference. First operand has 96 places, 97 transitions, 266 flow. Second operand 4 states and 284 transitions. [2023-11-23 22:29:51,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 123 transitions, 491 flow [2023-11-23 22:29:51,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 123 transitions, 477 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 22:29:51,662 INFO L231 Difference]: Finished difference. Result has 95 places, 96 transitions, 264 flow [2023-11-23 22:29:51,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2023-11-23 22:29:51,667 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2023-11-23 22:29:51,668 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 264 flow [2023-11-23 22:29:51,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 22:29:51,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:51,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:51,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:29:51,669 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:29:51,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash -63791591, now seen corresponding path program 1 times [2023-11-23 22:29:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:51,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372953326] [2023-11-23 22:29:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:51,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:51,815 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 22:29:51,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:51,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372953326] [2023-11-23 22:29:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372953326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:51,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:51,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:29:51,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963654516] [2023-11-23 22:29:51,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:51,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:29:51,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:29:51,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:29:51,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 100 [2023-11-23 22:29:51,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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 22:29:51,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:51,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 100 [2023-11-23 22:29:51,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:54,432 INFO L124 PetriNetUnfolderBase]: 13800/22232 cut-off events. [2023-11-23 22:29:54,432 INFO L125 PetriNetUnfolderBase]: For 9650/10395 co-relation queries the response was YES. [2023-11-23 22:29:54,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49251 conditions, 22232 events. 13800/22232 cut-off events. For 9650/10395 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 184275 event pairs, 2977 based on Foata normal form. 375/20582 useless extension candidates. Maximal degree in co-relation 29560. Up to 9338 conditions per place. [2023-11-23 22:29:54,606 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 97 selfloop transitions, 6 changer transitions 0/149 dead transitions. [2023-11-23 22:29:54,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 149 transitions, 630 flow [2023-11-23 22:29:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:29:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:29:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 357 transitions. [2023-11-23 22:29:54,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.714 [2023-11-23 22:29:54,609 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 357 transitions. [2023-11-23 22:29:54,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 357 transitions. [2023-11-23 22:29:54,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:54,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 357 transitions. [2023-11-23 22:29:54,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 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 22:29:54,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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 22:29:54,613 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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 22:29:54,614 INFO L175 Difference]: Start difference. First operand has 95 places, 96 transitions, 264 flow. Second operand 5 states and 357 transitions. [2023-11-23 22:29:54,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 149 transitions, 630 flow [2023-11-23 22:29:54,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 149 transitions, 610 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 22:29:54,742 INFO L231 Difference]: Finished difference. Result has 95 places, 95 transitions, 266 flow [2023-11-23 22:29:54,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=95, PETRI_TRANSITIONS=95} [2023-11-23 22:29:54,744 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2023-11-23 22:29:54,744 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 95 transitions, 266 flow [2023-11-23 22:29:54,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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 22:29:54,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:54,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:54,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:29:54,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:29:54,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash -63790566, now seen corresponding path program 1 times [2023-11-23 22:29:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:54,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722228343] [2023-11-23 22:29:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:54,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:54,814 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 22:29:54,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:54,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722228343] [2023-11-23 22:29:54,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722228343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:54,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:54,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:29:54,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140667277] [2023-11-23 22:29:54,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:54,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:54,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:54,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:54,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 100 [2023-11-23 22:29:54,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 22:29:54,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:54,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 100 [2023-11-23 22:29:54,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:57,608 INFO L124 PetriNetUnfolderBase]: 11267/20096 cut-off events. [2023-11-23 22:29:57,608 INFO L125 PetriNetUnfolderBase]: For 10163/10765 co-relation queries the response was YES. [2023-11-23 22:29:57,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42993 conditions, 20096 events. 11267/20096 cut-off events. For 10163/10765 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 182368 event pairs, 5297 based on Foata normal form. 571/18321 useless extension candidates. Maximal degree in co-relation 25701. Up to 9728 conditions per place. [2023-11-23 22:29:57,753 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 99 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2023-11-23 22:29:57,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 149 transitions, 618 flow [2023-11-23 22:29:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:29:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-11-23 22:29:57,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.755 [2023-11-23 22:29:57,755 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-11-23 22:29:57,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-11-23 22:29:57,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:57,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-11-23 22:29:57,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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 22:29:57,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:57,761 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:57,762 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 266 flow. Second operand 4 states and 302 transitions. [2023-11-23 22:29:57,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 149 transitions, 618 flow [2023-11-23 22:29:57,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 149 transitions, 606 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:29:57,851 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 256 flow [2023-11-23 22:29:57,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2023-11-23 22:29:57,852 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 4 predicate places. [2023-11-23 22:29:57,853 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 256 flow [2023-11-23 22:29:57,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 22:29:57,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:57,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:57,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:29:57,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:29:57,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:57,854 INFO L85 PathProgramCache]: Analyzing trace with hash 31432484, now seen corresponding path program 1 times [2023-11-23 22:29:57,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:57,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513848638] [2023-11-23 22:29:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:57,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:57,935 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 22:29:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513848638] [2023-11-23 22:29:57,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513848638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:57,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:57,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:29:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751686268] [2023-11-23 22:29:57,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:57,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:57,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 100 [2023-11-23 22:29:57,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 22:29:57,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:57,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 100 [2023-11-23 22:29:57,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:59,670 INFO L124 PetriNetUnfolderBase]: 10200/18854 cut-off events. [2023-11-23 22:29:59,670 INFO L125 PetriNetUnfolderBase]: For 9023/9301 co-relation queries the response was YES. [2023-11-23 22:29:59,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39524 conditions, 18854 events. 10200/18854 cut-off events. For 9023/9301 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 175024 event pairs, 2836 based on Foata normal form. 562/17160 useless extension candidates. Maximal degree in co-relation 24796. Up to 8108 conditions per place. [2023-11-23 22:29:59,802 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 70 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-11-23 22:29:59,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 120 transitions, 480 flow [2023-11-23 22:29:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:59,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:29:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-11-23 22:29:59,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-23 22:29:59,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-11-23 22:29:59,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-11-23 22:29:59,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:59,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-11-23 22:29:59,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 22:29:59,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:59,808 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:29:59,809 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 256 flow. Second operand 4 states and 280 transitions. [2023-11-23 22:29:59,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 120 transitions, 480 flow [2023-11-23 22:29:59,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 120 transitions, 469 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:29:59,958 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 254 flow [2023-11-23 22:29:59,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2023-11-23 22:29:59,959 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 4 predicate places. [2023-11-23 22:29:59,960 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 254 flow [2023-11-23 22:29:59,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 22:29:59,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:59,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:59,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:29:59,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:29:59,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2059289812, now seen corresponding path program 1 times [2023-11-23 22:29:59,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:59,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874223156] [2023-11-23 22:29:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:59,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:00,059 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 22:30:00,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874223156] [2023-11-23 22:30:00,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874223156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:00,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:00,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:00,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247992499] [2023-11-23 22:30:00,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:00,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:00,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:00,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 100 [2023-11-23 22:30:00,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 22:30:00,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:00,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 100 [2023-11-23 22:30:00,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:02,927 INFO L124 PetriNetUnfolderBase]: 16302/27861 cut-off events. [2023-11-23 22:30:02,927 INFO L125 PetriNetUnfolderBase]: For 15285/16144 co-relation queries the response was YES. [2023-11-23 22:30:03,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59197 conditions, 27861 events. 16302/27861 cut-off events. For 15285/16144 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 253815 event pairs, 6417 based on Foata normal form. 1487/25486 useless extension candidates. Maximal degree in co-relation 37245. Up to 11859 conditions per place. [2023-11-23 22:30:03,152 INFO L140 encePairwiseOnDemand]: 92/100 looper letters, 107 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2023-11-23 22:30:03,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 154 transitions, 688 flow [2023-11-23 22:30:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:30:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-11-23 22:30:03,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7675 [2023-11-23 22:30:03,155 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-11-23 22:30:03,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-11-23 22:30:03,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:03,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-11-23 22:30:03,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 22:30:03,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:30:03,158 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:30:03,158 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 254 flow. Second operand 4 states and 307 transitions. [2023-11-23 22:30:03,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 154 transitions, 688 flow [2023-11-23 22:30:03,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 154 transitions, 668 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 22:30:03,251 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 280 flow [2023-11-23 22:30:03,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2023-11-23 22:30:03,252 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 6 predicate places. [2023-11-23 22:30:03,253 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 280 flow [2023-11-23 22:30:03,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 22:30:03,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:03,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:03,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:30:03,254 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:30:03,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1977538562, now seen corresponding path program 1 times [2023-11-23 22:30:03,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:03,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624660677] [2023-11-23 22:30:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:03,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:03,343 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 22:30:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624660677] [2023-11-23 22:30:03,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624660677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:03,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:03,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:30:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858632740] [2023-11-23 22:30:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:03,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:30:03,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:03,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:30:03,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:30:03,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 100 [2023-11-23 22:30:03,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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 22:30:03,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:03,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 100 [2023-11-23 22:30:03,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:06,416 INFO L124 PetriNetUnfolderBase]: 16109/26443 cut-off events. [2023-11-23 22:30:06,416 INFO L125 PetriNetUnfolderBase]: For 14912/16028 co-relation queries the response was YES. [2023-11-23 22:30:06,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60724 conditions, 26443 events. 16109/26443 cut-off events. For 14912/16028 co-relation queries the response was YES. Maximal size of possible extension queue 1537. Compared 229895 event pairs, 3708 based on Foata normal form. 1429/25937 useless extension candidates. Maximal degree in co-relation 38580. Up to 7050 conditions per place. [2023-11-23 22:30:06,587 INFO L140 encePairwiseOnDemand]: 92/100 looper letters, 129 selfloop transitions, 9 changer transitions 0/182 dead transitions. [2023-11-23 22:30:06,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 182 transitions, 847 flow [2023-11-23 22:30:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:30:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:30:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 415 transitions. [2023-11-23 22:30:06,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2023-11-23 22:30:06,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 415 transitions. [2023-11-23 22:30:06,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 415 transitions. [2023-11-23 22:30:06,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:06,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 415 transitions. [2023-11-23 22:30:06,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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 22:30:06,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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 22:30:06,594 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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 22:30:06,595 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 280 flow. Second operand 6 states and 415 transitions. [2023-11-23 22:30:06,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 182 transitions, 847 flow [2023-11-23 22:30:06,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 182 transitions, 847 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:30:06,732 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 305 flow [2023-11-23 22:30:06,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2023-11-23 22:30:06,733 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 11 predicate places. [2023-11-23 22:30:06,734 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 305 flow [2023-11-23 22:30:06,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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 22:30:06,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:06,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:06,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:30:06,735 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:30:06,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:06,735 INFO L85 PathProgramCache]: Analyzing trace with hash 974406764, now seen corresponding path program 1 times [2023-11-23 22:30:06,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:06,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239207333] [2023-11-23 22:30:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:06,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:06,812 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 22:30:06,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:06,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239207333] [2023-11-23 22:30:06,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239207333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:06,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:06,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:06,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360689205] [2023-11-23 22:30:06,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:06,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:30:06,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:30:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:06,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 100 [2023-11-23 22:30:06,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 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 22:30:06,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:06,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 100 [2023-11-23 22:30:06,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:09,590 INFO L124 PetriNetUnfolderBase]: 16707/27163 cut-off events. [2023-11-23 22:30:09,590 INFO L125 PetriNetUnfolderBase]: For 25026/27245 co-relation queries the response was YES. [2023-11-23 22:30:09,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66596 conditions, 27163 events. 16707/27163 cut-off events. For 25026/27245 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 232505 event pairs, 3429 based on Foata normal form. 1562/27053 useless extension candidates. Maximal degree in co-relation 42596. Up to 11640 conditions per place. [2023-11-23 22:30:09,816 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 106 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2023-11-23 22:30:09,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 154 transitions, 759 flow [2023-11-23 22:30:09,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:30:09,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:30:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 357 transitions. [2023-11-23 22:30:09,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.714 [2023-11-23 22:30:09,820 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 357 transitions. [2023-11-23 22:30:09,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 357 transitions. [2023-11-23 22:30:09,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:09,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 357 transitions. [2023-11-23 22:30:09,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 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 22:30:09,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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 22:30:09,825 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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 22:30:09,825 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 305 flow. Second operand 5 states and 357 transitions. [2023-11-23 22:30:09,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 154 transitions, 759 flow [2023-11-23 22:30:10,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 154 transitions, 728 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:30:10,157 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 302 flow [2023-11-23 22:30:10,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2023-11-23 22:30:10,158 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 10 predicate places. [2023-11-23 22:30:10,158 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 302 flow [2023-11-23 22:30:10,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 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 22:30:10,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:10,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:10,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 22:30:10,160 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:30:10,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:10,160 INFO L85 PathProgramCache]: Analyzing trace with hash 974407789, now seen corresponding path program 1 times [2023-11-23 22:30:10,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:10,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481336920] [2023-11-23 22:30:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:10,223 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 22:30:10,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:10,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481336920] [2023-11-23 22:30:10,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481336920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:10,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:10,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:10,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969306881] [2023-11-23 22:30:10,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:10,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:10,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:10,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 100 [2023-11-23 22:30:10,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 22:30:10,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:10,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 100 [2023-11-23 22:30:10,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:12,764 INFO L124 PetriNetUnfolderBase]: 13609/24713 cut-off events. [2023-11-23 22:30:12,764 INFO L125 PetriNetUnfolderBase]: For 20826/22443 co-relation queries the response was YES. [2023-11-23 22:30:12,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57751 conditions, 24713 events. 13609/24713 cut-off events. For 20826/22443 co-relation queries the response was YES. Maximal size of possible extension queue 1412. Compared 234270 event pairs, 6435 based on Foata normal form. 1542/24154 useless extension candidates. Maximal degree in co-relation 36705. Up to 11537 conditions per place. [2023-11-23 22:30:12,931 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 108 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2023-11-23 22:30:12,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 154 transitions, 736 flow [2023-11-23 22:30:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:30:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-11-23 22:30:12,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.755 [2023-11-23 22:30:12,933 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-11-23 22:30:12,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-11-23 22:30:12,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:12,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-11-23 22:30:12,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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 22:30:12,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:30:12,936 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:30:12,936 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 302 flow. Second operand 4 states and 302 transitions. [2023-11-23 22:30:12,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 154 transitions, 736 flow [2023-11-23 22:30:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 154 transitions, 724 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:30:13,109 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 292 flow [2023-11-23 22:30:13,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2023-11-23 22:30:13,110 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2023-11-23 22:30:13,110 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 292 flow [2023-11-23 22:30:13,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 22:30:13,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:13,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:13,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 22:30:13,111 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:30:13,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash 586526074, now seen corresponding path program 1 times [2023-11-23 22:30:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:13,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631518754] [2023-11-23 22:30:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:13,173 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 22:30:13,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:13,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631518754] [2023-11-23 22:30:13,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631518754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:13,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:13,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912178999] [2023-11-23 22:30:13,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:13,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:13,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:13,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:13,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 100 [2023-11-23 22:30:13,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 22:30:13,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:13,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 100 [2023-11-23 22:30:13,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:15,885 INFO L124 PetriNetUnfolderBase]: 12262/23266 cut-off events. [2023-11-23 22:30:15,886 INFO L125 PetriNetUnfolderBase]: For 17401/18714 co-relation queries the response was YES. [2023-11-23 22:30:16,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52423 conditions, 23266 events. 12262/23266 cut-off events. For 17401/18714 co-relation queries the response was YES. Maximal size of possible extension queue 1350. Compared 228133 event pairs, 3818 based on Foata normal form. 1132/22230 useless extension candidates. Maximal degree in co-relation 33135. Up to 8602 conditions per place. [2023-11-23 22:30:16,133 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 75 selfloop transitions, 4 changer transitions 0/122 dead transitions. [2023-11-23 22:30:16,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 122 transitions, 559 flow [2023-11-23 22:30:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:30:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2023-11-23 22:30:16,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.71 [2023-11-23 22:30:16,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 284 transitions. [2023-11-23 22:30:16,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 284 transitions. [2023-11-23 22:30:16,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:16,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 284 transitions. [2023-11-23 22:30:16,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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 22:30:16,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:30:16,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:30:16,140 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 292 flow. Second operand 4 states and 284 transitions. [2023-11-23 22:30:16,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 122 transitions, 559 flow [2023-11-23 22:30:16,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 122 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:30:16,419 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 292 flow [2023-11-23 22:30:16,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2023-11-23 22:30:16,420 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2023-11-23 22:30:16,421 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 292 flow [2023-11-23 22:30:16,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 22:30:16,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:16,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:16,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 22:30:16,421 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:30:16,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash -226835425, now seen corresponding path program 1 times [2023-11-23 22:30:16,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:16,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956234681] [2023-11-23 22:30:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:16,525 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 22:30:16,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:16,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956234681] [2023-11-23 22:30:16,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956234681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:16,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:16,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912281574] [2023-11-23 22:30:16,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:16,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:16,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:16,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:16,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 100 [2023-11-23 22:30:16,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 22:30:16,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:16,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 100 [2023-11-23 22:30:16,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:19,346 INFO L124 PetriNetUnfolderBase]: 16086/26766 cut-off events. [2023-11-23 22:30:19,347 INFO L125 PetriNetUnfolderBase]: For 23631/24851 co-relation queries the response was YES. [2023-11-23 22:30:19,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63287 conditions, 26766 events. 16086/26766 cut-off events. For 23631/24851 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 236330 event pairs, 6498 based on Foata normal form. 1332/26065 useless extension candidates. Maximal degree in co-relation 39620. Up to 11975 conditions per place. [2023-11-23 22:30:19,562 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 104 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2023-11-23 22:30:19,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 150 transitions, 715 flow [2023-11-23 22:30:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:30:19,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2023-11-23 22:30:19,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-23 22:30:19,564 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 300 transitions. [2023-11-23 22:30:19,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 300 transitions. [2023-11-23 22:30:19,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:19,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 300 transitions. [2023-11-23 22:30:19,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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 22:30:19,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:30:19,567 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 22:30:19,567 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 292 flow. Second operand 4 states and 300 transitions. [2023-11-23 22:30:19,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 150 transitions, 715 flow [2023-11-23 22:30:19,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 150 transitions, 692 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:30:19,682 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 294 flow [2023-11-23 22:30:19,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2023-11-23 22:30:19,683 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2023-11-23 22:30:19,683 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 294 flow [2023-11-23 22:30:19,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 22:30:19,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:19,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:19,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 22:30:19,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:30:19,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 141839399, now seen corresponding path program 1 times [2023-11-23 22:30:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633919841] [2023-11-23 22:30:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:19,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:19,763 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 22:30:19,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:19,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633919841] [2023-11-23 22:30:19,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633919841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:19,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:19,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:30:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517690916] [2023-11-23 22:30:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:30:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:30:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:30:19,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 100 [2023-11-23 22:30:19,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 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 22:30:19,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:19,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 100 [2023-11-23 22:30:19,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:23,670 INFO L124 PetriNetUnfolderBase]: 17581/28327 cut-off events. [2023-11-23 22:30:23,670 INFO L125 PetriNetUnfolderBase]: For 27162/29124 co-relation queries the response was YES. [2023-11-23 22:30:23,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70372 conditions, 28327 events. 17581/28327 cut-off events. For 27162/29124 co-relation queries the response was YES. Maximal size of possible extension queue 1617. Compared 241374 event pairs, 3701 based on Foata normal form. 2330/28853 useless extension candidates. Maximal degree in co-relation 56581. Up to 7112 conditions per place. [2023-11-23 22:30:23,886 INFO L140 encePairwiseOnDemand]: 92/100 looper letters, 137 selfloop transitions, 9 changer transitions 0/185 dead transitions. [2023-11-23 22:30:23,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 185 transitions, 946 flow [2023-11-23 22:30:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:30:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:30:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 415 transitions. [2023-11-23 22:30:23,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2023-11-23 22:30:23,889 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 415 transitions. [2023-11-23 22:30:23,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 415 transitions. [2023-11-23 22:30:23,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:23,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 415 transitions. [2023-11-23 22:30:23,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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 22:30:23,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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 22:30:23,893 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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 22:30:23,893 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 294 flow. Second operand 6 states and 415 transitions. [2023-11-23 22:30:23,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 185 transitions, 946 flow [2023-11-23 22:30:24,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 185 transitions, 930 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:30:24,086 INFO L231 Difference]: Finished difference. Result has 102 places, 92 transitions, 315 flow [2023-11-23 22:30:24,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2023-11-23 22:30:24,087 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 12 predicate places. [2023-11-23 22:30:24,087 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 315 flow [2023-11-23 22:30:24,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 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 22:30:24,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:24,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:24,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 22:30:24,088 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 22:30:24,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1002408144, now seen corresponding path program 1 times [2023-11-23 22:30:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:24,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506804783] [2023-11-23 22:30:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:24,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:24,139 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 22:30:24,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:24,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506804783] [2023-11-23 22:30:24,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506804783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:24,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:24,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237980516] [2023-11-23 22:30:24,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:24,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:24,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:24,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 100 [2023-11-23 22:30:24,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 22:30:24,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:24,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 100 [2023-11-23 22:30:24,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand