./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-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_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/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_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/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_eb43077b-92cf-4a47-8f59-9206c83cf951/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 d7ba2cbd8ed9f48aa977924dd556bad66f28ba8aaa41d75f8db9183096d20ba1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:35:47,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:35:47,426 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 21:35:47,432 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:35:47,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:35:47,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:35:47,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:35:47,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:35:47,460 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:35:47,461 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:35:47,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:35:47,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:35:47,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:35:47,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:35:47,465 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:35:47,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:35:47,466 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:35:47,467 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:35:47,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:35:47,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:35:47,469 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:35:47,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:35:47,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:35:47,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:35:47,471 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:35:47,472 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:35:47,472 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:35:47,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:35:47,474 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:35:47,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:35:47,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:35:47,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:35:47,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:35:47,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:35:47,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:35:47,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:35:47,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:35:47,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:35:47,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:35:47,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:35:47,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:35:47,480 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:35:47,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:35:47,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:35:47,480 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_eb43077b-92cf-4a47-8f59-9206c83cf951/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7ba2cbd8ed9f48aa977924dd556bad66f28ba8aaa41d75f8db9183096d20ba1 [2023-11-23 21:35:47,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:35:47,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:35:47,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:35:47,841 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:35:47,842 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:35:47,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2023-11-23 21:35:50,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:35:51,190 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:35:51,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2023-11-23 21:35:51,200 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ/data/7c0cb83da/ced1e263ee814fd68e6a7b1fda92cf55/FLAG9bbbadc2a [2023-11-23 21:35:51,215 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ/data/7c0cb83da/ced1e263ee814fd68e6a7b1fda92cf55 [2023-11-23 21:35:51,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:35:51,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:35:51,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:51,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:35:51,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:35:51,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211ef16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51, skipping insertion in model container [2023-11-23 21:35:51,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,262 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:35:51,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:51,540 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:35:51,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:51,591 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:35:51,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51 WrapperNode [2023-11-23 21:35:51,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:51,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:51,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:35:51,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:35:51,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,674 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 252 [2023-11-23 21:35:51,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:51,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:35:51,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:35:51,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:35:51,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,708 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,725 INFO L189 HeapSplitter]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2] [2023-11-23 21:35:51,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:35:51,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:35:51,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:35:51,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:35:51,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (1/1) ... [2023-11-23 21:35:51,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:35:51,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:51,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:51,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb43077b-92cf-4a47-8f59-9206c83cf951/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:35:51,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:35:51,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 21:35:51,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 21:35:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 21:35:51,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 21:35:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 21:35:51,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 21:35:51,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:35:51,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:35:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:35:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 21:35:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:35:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:35:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:35:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:35:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 21:35:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:35:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:35:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:35:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:35:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 21:35:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 21:35:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:35:51,892 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:35:52,098 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:35:52,102 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:35:52,741 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:35:53,147 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:35:53,148 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:35:53,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:53 BoogieIcfgContainer [2023-11-23 21:35:53,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:35:53,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:35:53,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:35:53,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:35:53,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:35:51" (1/3) ... [2023-11-23 21:35:53,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7159d7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:35:53, skipping insertion in model container [2023-11-23 21:35:53,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:51" (2/3) ... [2023-11-23 21:35:53,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7159d7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:35:53, skipping insertion in model container [2023-11-23 21:35:53,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:53" (3/3) ... [2023-11-23 21:35:53,164 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2023-11-23 21:35:53,176 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:35:53,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:35:53,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-23 21:35:53,191 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:35:53,288 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:35:53,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 109 transitions, 239 flow [2023-11-23 21:35:53,389 INFO L124 PetriNetUnfolderBase]: 18/106 cut-off events. [2023-11-23 21:35:53,389 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 21:35:53,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 18/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 404 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-23 21:35:53,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 109 transitions, 239 flow [2023-11-23 21:35:53,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 104 transitions, 223 flow [2023-11-23 21:35:53,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:35:53,423 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;@62a05c05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:35:53,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-23 21:35:53,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:35:53,439 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2023-11-23 21:35:53,439 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 21:35:53,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:53,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:53,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:35:53,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1642650914, now seen corresponding path program 1 times [2023-11-23 21:35:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275066161] [2023-11-23 21:35:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:53,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275066161] [2023-11-23 21:35:53,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275066161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:53,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:53,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:53,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238487057] [2023-11-23 21:35:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:53,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:35:53,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:53,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:35:53,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:35:54,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 109 [2023-11-23 21:35:54,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 104 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:54,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:54,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 109 [2023-11-23 21:35:54,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:57,823 INFO L124 PetriNetUnfolderBase]: 14358/22917 cut-off events. [2023-11-23 21:35:57,824 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2023-11-23 21:35:57,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42350 conditions, 22917 events. 14358/22917 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 1444. Compared 190570 event pairs, 5650 based on Foata normal form. 532/19339 useless extension candidates. Maximal degree in co-relation 40483. Up to 10569 conditions per place. [2023-11-23 21:35:58,129 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 102 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2023-11-23 21:35:58,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 161 transitions, 563 flow [2023-11-23 21:35:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:35:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:35:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-11-23 21:35:58,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7752293577981652 [2023-11-23 21:35:58,152 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-11-23 21:35:58,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-11-23 21:35:58,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:58,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-11-23 21:35:58,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:58,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:58,172 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:58,174 INFO L175 Difference]: Start difference. First operand has 96 places, 104 transitions, 223 flow. Second operand 4 states and 338 transitions. [2023-11-23 21:35:58,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 161 transitions, 563 flow [2023-11-23 21:35:58,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 161 transitions, 548 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-23 21:35:58,262 INFO L231 Difference]: Finished difference. Result has 96 places, 106 transitions, 248 flow [2023-11-23 21:35:58,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=96, PETRI_TRANSITIONS=106} [2023-11-23 21:35:58,270 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 0 predicate places. [2023-11-23 21:35:58,270 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 106 transitions, 248 flow [2023-11-23 21:35:58,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:58,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:58,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:58,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:35:58,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:35:58,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:58,275 INFO L85 PathProgramCache]: Analyzing trace with hash -617428399, now seen corresponding path program 1 times [2023-11-23 21:35:58,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:58,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620123678] [2023-11-23 21:35:58,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:58,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:58,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620123678] [2023-11-23 21:35:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620123678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:58,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:58,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:35:58,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443879535] [2023-11-23 21:35:58,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:58,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:35:58,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:58,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:35:58,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:35:58,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 109 [2023-11-23 21:35:58,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 106 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:58,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:58,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 109 [2023-11-23 21:35:58,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:00,831 INFO L124 PetriNetUnfolderBase]: 10884/19512 cut-off events. [2023-11-23 21:36:00,832 INFO L125 PetriNetUnfolderBase]: For 3433/3455 co-relation queries the response was YES. [2023-11-23 21:36:00,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37710 conditions, 19512 events. 10884/19512 cut-off events. For 3433/3455 co-relation queries the response was YES. Maximal size of possible extension queue 1248. Compared 179512 event pairs, 3597 based on Foata normal form. 22/16879 useless extension candidates. Maximal degree in co-relation 22505. Up to 7399 conditions per place. [2023-11-23 21:36:01,051 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 70 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2023-11-23 21:36:01,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 132 transitions, 451 flow [2023-11-23 21:36:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:36:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:36:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-11-23 21:36:01,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7178899082568807 [2023-11-23 21:36:01,055 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-11-23 21:36:01,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-11-23 21:36:01,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:01,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-11-23 21:36:01,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:01,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:01,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:01,063 INFO L175 Difference]: Start difference. First operand has 96 places, 106 transitions, 248 flow. Second operand 4 states and 313 transitions. [2023-11-23 21:36:01,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 132 transitions, 451 flow [2023-11-23 21:36:01,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 132 transitions, 451 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:36:01,281 INFO L231 Difference]: Finished difference. Result has 98 places, 105 transitions, 254 flow [2023-11-23 21:36:01,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=98, PETRI_TRANSITIONS=105} [2023-11-23 21:36:01,289 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2023-11-23 21:36:01,290 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 105 transitions, 254 flow [2023-11-23 21:36:01,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:01,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:01,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:01,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:36:01,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:01,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:01,293 INFO L85 PathProgramCache]: Analyzing trace with hash -367488160, now seen corresponding path program 1 times [2023-11-23 21:36:01,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:01,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850269536] [2023-11-23 21:36:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:01,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:01,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850269536] [2023-11-23 21:36:01,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850269536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:01,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:01,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826850734] [2023-11-23 21:36:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:01,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:36:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:36:01,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:36:01,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 109 [2023-11-23 21:36:01,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 105 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:01,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:01,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 109 [2023-11-23 21:36:01,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:05,103 INFO L124 PetriNetUnfolderBase]: 17140/28688 cut-off events. [2023-11-23 21:36:05,103 INFO L125 PetriNetUnfolderBase]: For 8540/9365 co-relation queries the response was YES. [2023-11-23 21:36:05,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57103 conditions, 28688 events. 17140/28688 cut-off events. For 8540/9365 co-relation queries the response was YES. Maximal size of possible extension queue 1716. Compared 258041 event pairs, 6707 based on Foata normal form. 1081/25045 useless extension candidates. Maximal degree in co-relation 35838. Up to 12380 conditions per place. [2023-11-23 21:36:05,358 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 108 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2023-11-23 21:36:05,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 166 transitions, 656 flow [2023-11-23 21:36:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:36:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:36:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-11-23 21:36:05,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7752293577981652 [2023-11-23 21:36:05,362 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-11-23 21:36:05,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-11-23 21:36:05,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:05,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-11-23 21:36:05,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:05,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:05,366 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:05,366 INFO L175 Difference]: Start difference. First operand has 98 places, 105 transitions, 254 flow. Second operand 4 states and 338 transitions. [2023-11-23 21:36:05,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 166 transitions, 656 flow [2023-11-23 21:36:05,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 166 transitions, 636 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:36:05,543 INFO L231 Difference]: Finished difference. Result has 100 places, 107 transitions, 280 flow [2023-11-23 21:36:05,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=100, PETRI_TRANSITIONS=107} [2023-11-23 21:36:05,545 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 4 predicate places. [2023-11-23 21:36:05,546 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 107 transitions, 280 flow [2023-11-23 21:36:05,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:05,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:05,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:36:05,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:05,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1960442138, now seen corresponding path program 1 times [2023-11-23 21:36:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:05,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545934066] [2023-11-23 21:36:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:05,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:05,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:05,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545934066] [2023-11-23 21:36:05,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545934066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:05,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:05,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:36:05,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080338940] [2023-11-23 21:36:05,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:05,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:36:05,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:05,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:36:05,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:36:05,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 109 [2023-11-23 21:36:05,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 107 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:05,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:05,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 109 [2023-11-23 21:36:05,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:08,378 INFO L124 PetriNetUnfolderBase]: 12798/23657 cut-off events. [2023-11-23 21:36:08,378 INFO L125 PetriNetUnfolderBase]: For 8963/9604 co-relation queries the response was YES. [2023-11-23 21:36:08,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48326 conditions, 23657 events. 12798/23657 cut-off events. For 8963/9604 co-relation queries the response was YES. Maximal size of possible extension queue 1429. Compared 229361 event pairs, 4309 based on Foata normal form. 648/21332 useless extension candidates. Maximal degree in co-relation 30421. Up to 8977 conditions per place. [2023-11-23 21:36:08,568 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 75 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2023-11-23 21:36:08,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 135 transitions, 513 flow [2023-11-23 21:36:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:36:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:36:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-11-23 21:36:08,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7087155963302753 [2023-11-23 21:36:08,571 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-11-23 21:36:08,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-11-23 21:36:08,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:08,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-11-23 21:36:08,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:08,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:08,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:08,575 INFO L175 Difference]: Start difference. First operand has 100 places, 107 transitions, 280 flow. Second operand 4 states and 309 transitions. [2023-11-23 21:36:08,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 135 transitions, 513 flow [2023-11-23 21:36:08,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 135 transitions, 513 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:36:08,802 INFO L231 Difference]: Finished difference. Result has 102 places, 106 transitions, 284 flow [2023-11-23 21:36:08,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=102, PETRI_TRANSITIONS=106} [2023-11-23 21:36:08,804 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 6 predicate places. [2023-11-23 21:36:08,805 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 106 transitions, 284 flow [2023-11-23 21:36:08,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:08,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:08,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:08,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:36:08,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:08,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1492769778, now seen corresponding path program 1 times [2023-11-23 21:36:08,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661422248] [2023-11-23 21:36:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:08,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:08,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:08,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661422248] [2023-11-23 21:36:08,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661422248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:08,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:08,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:36:08,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394300542] [2023-11-23 21:36:08,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:08,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:36:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:36:08,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:36:08,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 109 [2023-11-23 21:36:08,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 106 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:08,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:08,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 109 [2023-11-23 21:36:08,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:11,432 INFO L124 PetriNetUnfolderBase]: 12828/24062 cut-off events. [2023-11-23 21:36:11,432 INFO L125 PetriNetUnfolderBase]: For 10547/10873 co-relation queries the response was YES. [2023-11-23 21:36:11,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49735 conditions, 24062 events. 12828/24062 cut-off events. For 10547/10873 co-relation queries the response was YES. Maximal size of possible extension queue 1477. Compared 236898 event pairs, 4066 based on Foata normal form. 326/21364 useless extension candidates. Maximal degree in co-relation 32007. Up to 9147 conditions per place. [2023-11-23 21:36:11,648 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 74 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2023-11-23 21:36:11,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 134 transitions, 523 flow [2023-11-23 21:36:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:36:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:36:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-11-23 21:36:11,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7178899082568807 [2023-11-23 21:36:11,653 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-11-23 21:36:11,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-11-23 21:36:11,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:11,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-11-23 21:36:11,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:11,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:11,657 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:11,658 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 284 flow. Second operand 4 states and 313 transitions. [2023-11-23 21:36:11,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 134 transitions, 523 flow [2023-11-23 21:36:12,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 134 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:36:12,127 INFO L231 Difference]: Finished difference. Result has 101 places, 105 transitions, 282 flow [2023-11-23 21:36:12,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=101, PETRI_TRANSITIONS=105} [2023-11-23 21:36:12,129 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2023-11-23 21:36:12,129 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 105 transitions, 282 flow [2023-11-23 21:36:12,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:12,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:12,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:12,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:36:12,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:12,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:12,131 INFO L85 PathProgramCache]: Analyzing trace with hash -644164333, now seen corresponding path program 1 times [2023-11-23 21:36:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:12,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425702960] [2023-11-23 21:36:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:12,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:12,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:12,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425702960] [2023-11-23 21:36:12,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425702960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:12,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:12,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779952675] [2023-11-23 21:36:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:12,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:36:12,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:12,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:36:12,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:36:12,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 109 [2023-11-23 21:36:12,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 105 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:12,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:12,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 109 [2023-11-23 21:36:12,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:15,023 INFO L124 PetriNetUnfolderBase]: 17075/27595 cut-off events. [2023-11-23 21:36:15,023 INFO L125 PetriNetUnfolderBase]: For 11173/12029 co-relation queries the response was YES. [2023-11-23 21:36:15,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60359 conditions, 27595 events. 17075/27595 cut-off events. For 11173/12029 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 239385 event pairs, 4225 based on Foata normal form. 431/25467 useless extension candidates. Maximal degree in co-relation 37461. Up to 10961 conditions per place. [2023-11-23 21:36:15,476 INFO L140 encePairwiseOnDemand]: 103/109 looper letters, 104 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2023-11-23 21:36:15,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 162 transitions, 670 flow [2023-11-23 21:36:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:36:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:36:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-11-23 21:36:15,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7229357798165138 [2023-11-23 21:36:15,479 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-11-23 21:36:15,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-11-23 21:36:15,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:15,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-11-23 21:36:15,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:15,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:15,484 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:15,484 INFO L175 Difference]: Start difference. First operand has 101 places, 105 transitions, 282 flow. Second operand 5 states and 394 transitions. [2023-11-23 21:36:15,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 162 transitions, 670 flow [2023-11-23 21:36:15,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 162 transitions, 650 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:36:15,604 INFO L231 Difference]: Finished difference. Result has 101 places, 104 transitions, 284 flow [2023-11-23 21:36:15,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=101, PETRI_TRANSITIONS=104} [2023-11-23 21:36:15,605 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2023-11-23 21:36:15,605 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 104 transitions, 284 flow [2023-11-23 21:36:15,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:15,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:15,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:15,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:36:15,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:15,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash -644163308, now seen corresponding path program 1 times [2023-11-23 21:36:15,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:15,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193583147] [2023-11-23 21:36:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:15,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:15,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:15,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193583147] [2023-11-23 21:36:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193583147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:15,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:15,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564040193] [2023-11-23 21:36:15,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:15,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:36:15,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:15,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:36:15,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:36:15,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 109 [2023-11-23 21:36:15,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 104 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:15,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:15,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 109 [2023-11-23 21:36:15,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:17,755 INFO L124 PetriNetUnfolderBase]: 14120/25088 cut-off events. [2023-11-23 21:36:17,755 INFO L125 PetriNetUnfolderBase]: For 11950/12651 co-relation queries the response was YES. [2023-11-23 21:36:17,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53107 conditions, 25088 events. 14120/25088 cut-off events. For 11950/12651 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 236282 event pairs, 6995 based on Foata normal form. 669/22803 useless extension candidates. Maximal degree in co-relation 33096. Up to 12549 conditions per place. [2023-11-23 21:36:17,934 INFO L140 encePairwiseOnDemand]: 104/109 looper letters, 106 selfloop transitions, 4 changer transitions 0/162 dead transitions. [2023-11-23 21:36:17,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 162 transitions, 658 flow [2023-11-23 21:36:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:36:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:36:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-11-23 21:36:17,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7637614678899083 [2023-11-23 21:36:17,943 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-11-23 21:36:17,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-11-23 21:36:17,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:17,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-11-23 21:36:17,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:17,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:17,952 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:17,952 INFO L175 Difference]: Start difference. First operand has 101 places, 104 transitions, 284 flow. Second operand 4 states and 333 transitions. [2023-11-23 21:36:17,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 162 transitions, 658 flow [2023-11-23 21:36:18,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 162 transitions, 646 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 21:36:18,062 INFO L231 Difference]: Finished difference. Result has 100 places, 103 transitions, 274 flow [2023-11-23 21:36:18,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=100, PETRI_TRANSITIONS=103} [2023-11-23 21:36:18,064 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 4 predicate places. [2023-11-23 21:36:18,064 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 103 transitions, 274 flow [2023-11-23 21:36:18,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:18,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:18,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:18,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:36:18,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:18,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1928028905, now seen corresponding path program 1 times [2023-11-23 21:36:18,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:18,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352707027] [2023-11-23 21:36:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:18,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:18,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:18,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352707027] [2023-11-23 21:36:18,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352707027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:18,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:18,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:36:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685679335] [2023-11-23 21:36:18,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:18,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:36:18,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:18,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:36:18,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:36:18,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 109 [2023-11-23 21:36:18,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 103 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:18,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:18,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 109 [2023-11-23 21:36:18,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:20,332 INFO L124 PetriNetUnfolderBase]: 12969/23523 cut-off events. [2023-11-23 21:36:20,332 INFO L125 PetriNetUnfolderBase]: For 9428/10352 co-relation queries the response was YES. [2023-11-23 21:36:20,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47711 conditions, 23523 events. 12969/23523 cut-off events. For 9428/10352 co-relation queries the response was YES. Maximal size of possible extension queue 1414. Compared 224593 event pairs, 5331 based on Foata normal form. 1356/21294 useless extension candidates. Maximal degree in co-relation 30867. Up to 9379 conditions per place. [2023-11-23 21:36:20,504 INFO L140 encePairwiseOnDemand]: 104/109 looper letters, 78 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2023-11-23 21:36:20,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 132 transitions, 537 flow [2023-11-23 21:36:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:36:20,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:36:20,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-11-23 21:36:20,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.713302752293578 [2023-11-23 21:36:20,515 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-11-23 21:36:20,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-11-23 21:36:20,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:20,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-11-23 21:36:20,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:20,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:20,521 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:20,521 INFO L175 Difference]: Start difference. First operand has 100 places, 103 transitions, 274 flow. Second operand 4 states and 311 transitions. [2023-11-23 21:36:20,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 132 transitions, 537 flow [2023-11-23 21:36:20,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 132 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:36:20,621 INFO L231 Difference]: Finished difference. Result has 99 places, 101 transitions, 270 flow [2023-11-23 21:36:20,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=99, PETRI_TRANSITIONS=101} [2023-11-23 21:36:20,625 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2023-11-23 21:36:20,626 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 101 transitions, 270 flow [2023-11-23 21:36:20,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:20,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:20,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:20,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:36:20,627 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:20,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash -968808060, now seen corresponding path program 1 times [2023-11-23 21:36:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:20,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217931090] [2023-11-23 21:36:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:20,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:20,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:20,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217931090] [2023-11-23 21:36:20,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217931090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:20,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:20,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:36:20,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012995976] [2023-11-23 21:36:20,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:20,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:36:20,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:20,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:36:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:36:20,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 109 [2023-11-23 21:36:20,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 101 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:20,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:20,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 109 [2023-11-23 21:36:20,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:22,601 INFO L124 PetriNetUnfolderBase]: 12849/23524 cut-off events. [2023-11-23 21:36:22,601 INFO L125 PetriNetUnfolderBase]: For 10441/10767 co-relation queries the response was YES. [2023-11-23 21:36:22,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48753 conditions, 23524 events. 12849/23524 cut-off events. For 10441/10767 co-relation queries the response was YES. Maximal size of possible extension queue 1433. Compared 225582 event pairs, 4066 based on Foata normal form. 660/21668 useless extension candidates. Maximal degree in co-relation 31987. Up to 9481 conditions per place. [2023-11-23 21:36:22,943 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 75 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2023-11-23 21:36:22,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 129 transitions, 507 flow [2023-11-23 21:36:22,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:36:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:36:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-11-23 21:36:22,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7087155963302753 [2023-11-23 21:36:22,945 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-11-23 21:36:22,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-11-23 21:36:22,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:22,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-11-23 21:36:22,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:22,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:22,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:22,948 INFO L175 Difference]: Start difference. First operand has 99 places, 101 transitions, 270 flow. Second operand 4 states and 309 transitions. [2023-11-23 21:36:22,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 129 transitions, 507 flow [2023-11-23 21:36:23,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 129 transitions, 497 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:36:23,164 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 268 flow [2023-11-23 21:36:23,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2023-11-23 21:36:23,165 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2023-11-23 21:36:23,165 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 268 flow [2023-11-23 21:36:23,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:23,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:23,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:23,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:36:23,166 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:23,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:23,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1505742985, now seen corresponding path program 1 times [2023-11-23 21:36:23,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364866748] [2023-11-23 21:36:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:23,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:23,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:23,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364866748] [2023-11-23 21:36:23,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364866748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:23,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:23,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:36:23,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589206321] [2023-11-23 21:36:23,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:23,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:36:23,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:36:23,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:36:23,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 109 [2023-11-23 21:36:23,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:23,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:23,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 109 [2023-11-23 21:36:23,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:26,049 INFO L124 PetriNetUnfolderBase]: 16761/26779 cut-off events. [2023-11-23 21:36:26,049 INFO L125 PetriNetUnfolderBase]: For 13078/13530 co-relation queries the response was YES. [2023-11-23 21:36:26,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58825 conditions, 26779 events. 16761/26779 cut-off events. For 13078/13530 co-relation queries the response was YES. Maximal size of possible extension queue 1628. Compared 229024 event pairs, 4204 based on Foata normal form. 1080/25420 useless extension candidates. Maximal degree in co-relation 36381. Up to 7905 conditions per place. [2023-11-23 21:36:26,216 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 130 selfloop transitions, 9 changer transitions 0/187 dead transitions. [2023-11-23 21:36:26,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 187 transitions, 801 flow [2023-11-23 21:36:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:36:26,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:36:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 460 transitions. [2023-11-23 21:36:26,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7033639143730887 [2023-11-23 21:36:26,219 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 460 transitions. [2023-11-23 21:36:26,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 460 transitions. [2023-11-23 21:36:26,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:26,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 460 transitions. [2023-11-23 21:36:26,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:26,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:26,224 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:26,225 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 268 flow. Second operand 6 states and 460 transitions. [2023-11-23 21:36:26,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 187 transitions, 801 flow [2023-11-23 21:36:26,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 187 transitions, 775 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:36:26,348 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 285 flow [2023-11-23 21:36:26,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2023-11-23 21:36:26,349 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 4 predicate places. [2023-11-23 21:36:26,349 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 285 flow [2023-11-23 21:36:26,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:26,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:26,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:26,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:36:26,350 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:26,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash 360646970, now seen corresponding path program 1 times [2023-11-23 21:36:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:26,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905561839] [2023-11-23 21:36:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:26,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:26,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:26,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905561839] [2023-11-23 21:36:26,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905561839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:26,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:26,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:36:26,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525685611] [2023-11-23 21:36:26,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:26,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:36:26,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:26,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:36:26,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:36:26,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 109 [2023-11-23 21:36:26,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:26,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:26,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 109 [2023-11-23 21:36:26,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:28,275 INFO L124 PetriNetUnfolderBase]: 10956/20979 cut-off events. [2023-11-23 21:36:28,276 INFO L125 PetriNetUnfolderBase]: For 13585/14560 co-relation queries the response was YES. [2023-11-23 21:36:28,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43529 conditions, 20979 events. 10956/20979 cut-off events. For 13585/14560 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 206522 event pairs, 5332 based on Foata normal form. 882/19164 useless extension candidates. Maximal degree in co-relation 27536. Up to 9381 conditions per place. [2023-11-23 21:36:28,423 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 78 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2023-11-23 21:36:28,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 564 flow [2023-11-23 21:36:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:36:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:36:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-11-23 21:36:28,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7155963302752294 [2023-11-23 21:36:28,426 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-11-23 21:36:28,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-11-23 21:36:28,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:28,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-11-23 21:36:28,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:28,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:28,429 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:28,429 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 285 flow. Second operand 4 states and 312 transitions. [2023-11-23 21:36:28,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 564 flow [2023-11-23 21:36:28,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 131 transitions, 542 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 21:36:28,491 INFO L231 Difference]: Finished difference. Result has 98 places, 99 transitions, 276 flow [2023-11-23 21:36:28,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=98, PETRI_TRANSITIONS=99} [2023-11-23 21:36:28,493 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2023-11-23 21:36:28,493 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 99 transitions, 276 flow [2023-11-23 21:36:28,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:28,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:28,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:28,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:36:28,494 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:28,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash 31721044, now seen corresponding path program 1 times [2023-11-23 21:36:28,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:28,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442237123] [2023-11-23 21:36:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:28,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:28,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:28,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442237123] [2023-11-23 21:36:28,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442237123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:28,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:28,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:28,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381213214] [2023-11-23 21:36:28,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:28,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:36:28,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:28,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:36:28,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:36:28,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 109 [2023-11-23 21:36:28,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 99 transitions, 276 flow. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:28,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:28,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 109 [2023-11-23 21:36:28,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:31,221 INFO L124 PetriNetUnfolderBase]: 17355/27479 cut-off events. [2023-11-23 21:36:31,221 INFO L125 PetriNetUnfolderBase]: For 13294/14734 co-relation queries the response was YES. [2023-11-23 21:36:31,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62333 conditions, 27479 events. 17355/27479 cut-off events. For 13294/14734 co-relation queries the response was YES. Maximal size of possible extension queue 1672. Compared 231767 event pairs, 3979 based on Foata normal form. 1142/26822 useless extension candidates. Maximal degree in co-relation 40104. Up to 11575 conditions per place. [2023-11-23 21:36:31,392 INFO L140 encePairwiseOnDemand]: 103/109 looper letters, 107 selfloop transitions, 6 changer transitions 0/158 dead transitions. [2023-11-23 21:36:31,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 158 transitions, 686 flow [2023-11-23 21:36:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:36:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:36:31,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-11-23 21:36:31,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7229357798165138 [2023-11-23 21:36:31,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-11-23 21:36:31,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-11-23 21:36:31,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:31,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-11-23 21:36:31,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:31,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:31,397 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:31,397 INFO L175 Difference]: Start difference. First operand has 98 places, 99 transitions, 276 flow. Second operand 5 states and 394 transitions. [2023-11-23 21:36:31,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 158 transitions, 686 flow [2023-11-23 21:36:31,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 158 transitions, 672 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:36:31,561 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 280 flow [2023-11-23 21:36:31,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2023-11-23 21:36:31,562 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2023-11-23 21:36:31,562 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 280 flow [2023-11-23 21:36:31,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:31,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:31,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:31,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:36:31,563 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:31,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 31722069, now seen corresponding path program 1 times [2023-11-23 21:36:31,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:31,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766978599] [2023-11-23 21:36:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:31,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:31,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:31,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766978599] [2023-11-23 21:36:31,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766978599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:31,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:31,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:31,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187147910] [2023-11-23 21:36:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:31,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:36:31,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:36:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:36:31,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 109 [2023-11-23 21:36:31,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:31,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:31,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 109 [2023-11-23 21:36:31,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:34,010 INFO L124 PetriNetUnfolderBase]: 14239/24507 cut-off events. [2023-11-23 21:36:34,010 INFO L125 PetriNetUnfolderBase]: For 16095/17177 co-relation queries the response was YES. [2023-11-23 21:36:34,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54476 conditions, 24507 events. 14239/24507 cut-off events. For 16095/17177 co-relation queries the response was YES. Maximal size of possible extension queue 1487. Compared 223152 event pairs, 6905 based on Foata normal form. 1234/23372 useless extension candidates. Maximal degree in co-relation 34985. Up to 12379 conditions per place. [2023-11-23 21:36:34,181 INFO L140 encePairwiseOnDemand]: 104/109 looper letters, 109 selfloop transitions, 4 changer transitions 0/158 dead transitions. [2023-11-23 21:36:34,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 158 transitions, 680 flow [2023-11-23 21:36:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:36:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:36:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-11-23 21:36:34,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7637614678899083 [2023-11-23 21:36:34,184 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-11-23 21:36:34,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-11-23 21:36:34,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:34,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-11-23 21:36:34,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:34,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:34,186 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:34,186 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 280 flow. Second operand 4 states and 333 transitions. [2023-11-23 21:36:34,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 158 transitions, 680 flow [2023-11-23 21:36:34,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 158 transitions, 668 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 21:36:34,326 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 270 flow [2023-11-23 21:36:34,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=94, 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=270, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2023-11-23 21:36:34,327 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 1 predicate places. [2023-11-23 21:36:34,327 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 270 flow [2023-11-23 21:36:34,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:34,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:34,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:34,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:36:34,328 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:34,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:34,328 INFO L85 PathProgramCache]: Analyzing trace with hash 380710201, now seen corresponding path program 1 times [2023-11-23 21:36:34,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:34,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383095684] [2023-11-23 21:36:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:34,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:34,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383095684] [2023-11-23 21:36:34,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383095684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:34,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:34,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:34,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103960742] [2023-11-23 21:36:34,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:34,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:36:34,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:34,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:36:34,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:36:34,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 109 [2023-11-23 21:36:34,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:34,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:34,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 109 [2023-11-23 21:36:34,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:36:37,004 INFO L124 PetriNetUnfolderBase]: 16630/26406 cut-off events. [2023-11-23 21:36:37,004 INFO L125 PetriNetUnfolderBase]: For 15799/16509 co-relation queries the response was YES. [2023-11-23 21:36:37,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58946 conditions, 26406 events. 16630/26406 cut-off events. For 15799/16509 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 223163 event pairs, 6888 based on Foata normal form. 1024/25032 useless extension candidates. Maximal degree in co-relation 36561. Up to 12685 conditions per place. [2023-11-23 21:36:37,193 INFO L140 encePairwiseOnDemand]: 104/109 looper letters, 105 selfloop transitions, 5 changer transitions 0/155 dead transitions. [2023-11-23 21:36:37,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 155 transitions, 657 flow [2023-11-23 21:36:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:36:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:36:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2023-11-23 21:36:37,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7591743119266054 [2023-11-23 21:36:37,197 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2023-11-23 21:36:37,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2023-11-23 21:36:37,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:36:37,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2023-11-23 21:36:37,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:37,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:37,201 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:37,201 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 270 flow. Second operand 4 states and 331 transitions. [2023-11-23 21:36:37,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 155 transitions, 657 flow [2023-11-23 21:36:37,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 155 transitions, 638 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:36:37,235 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 274 flow [2023-11-23 21:36:37,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2023-11-23 21:36:37,236 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 1 predicate places. [2023-11-23 21:36:37,236 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 274 flow [2023-11-23 21:36:37,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:37,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:36:37,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:37,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:36:37,237 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-23 21:36:37,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash 983353223, now seen corresponding path program 1 times [2023-11-23 21:36:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:37,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311668257] [2023-11-23 21:36:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:37,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:37,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:37,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311668257] [2023-11-23 21:36:37,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311668257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:37,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:37,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:36:37,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329844922] [2023-11-23 21:36:37,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:37,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:36:37,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:37,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:36:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:36:37,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 109 [2023-11-23 21:36:37,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:36:37,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:36:37,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 109 [2023-11-23 21:36:37,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand