./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme --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 77faa562cc80dab159af187984ab1ce484b13225711253aedc5512d7a84dfd3f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:58:03,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:58:03,304 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:58:03,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:58:03,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:58:03,338 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:58:03,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:58:03,339 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:58:03,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:58:03,340 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:58:03,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:58:03,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:58:03,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:58:03,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:58:03,344 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:58:03,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:58:03,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:58:03,346 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:58:03,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:58:03,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:58:03,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:58:03,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:58:03,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:58:03,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:58:03,350 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:58:03,351 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:58:03,351 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:58:03,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:58:03,352 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:58:03,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:58:03,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:58:03,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:58:03,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:58:03,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:03,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:58:03,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:58:03,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:58:03,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:58:03,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:58:03,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:58:03,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:58:03,358 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:58:03,358 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:58:03,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:58:03,359 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_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77faa562cc80dab159af187984ab1ce484b13225711253aedc5512d7a84dfd3f [2023-11-26 11:58:03,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:58:03,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:58:03,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:58:03,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:58:03,688 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:58:03,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2023-11-26 11:58:06,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:58:07,194 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:58:07,195 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2023-11-26 11:58:07,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/data/09fdbe9e7/4eb7c0f57ab944239fc842d797c58d25/FLAGc568d1749 [2023-11-26 11:58:07,227 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/data/09fdbe9e7/4eb7c0f57ab944239fc842d797c58d25 [2023-11-26 11:58:07,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:58:07,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:58:07,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:07,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:58:07,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:58:07,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777c7ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07, skipping insertion in model container [2023-11-26 11:58:07,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:58:07,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:07,484 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:58:07,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:07,526 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:58:07,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07 WrapperNode [2023-11-26 11:58:07,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:07,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:07,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:58:07,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:58:07,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,581 INFO L138 Inliner]: procedures = 22, calls = 28, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 213 [2023-11-26 11:58:07,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:07,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:58:07,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:58:07,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:58:07,596 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,621 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-26 11:58:07,621 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:58:07,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:58:07,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:58:07,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:58:07,650 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (1/1) ... [2023-11-26 11:58:07,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:07,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:07,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:58:07,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:58:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:58:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:58:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:58:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:58:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:58:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:58:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:58:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:58:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:58:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:58:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:58:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:58:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:58:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:58:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:58:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:58:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:58:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:58:07,771 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:58:07,967 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:58:07,970 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:58:08,538 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:58:08,916 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:58:08,917 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:58:08,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:08 BoogieIcfgContainer [2023-11-26 11:58:08,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:58:08,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:58:08,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:58:08,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:58:08,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:58:07" (1/3) ... [2023-11-26 11:58:08,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a000951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:08, skipping insertion in model container [2023-11-26 11:58:08,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:07" (2/3) ... [2023-11-26 11:58:08,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a000951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:08, skipping insertion in model container [2023-11-26 11:58:08,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:08" (3/3) ... [2023-11-26 11:58:08,932 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2023-11-26 11:58:08,944 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:58:08,955 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:58:08,956 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-26 11:58:08,957 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:58:09,063 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:58:09,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 85 transitions, 184 flow [2023-11-26 11:58:09,183 INFO L124 PetriNetUnfolderBase]: 8/83 cut-off events. [2023-11-26 11:58:09,183 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:58:09,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 8/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-11-26 11:58:09,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 85 transitions, 184 flow [2023-11-26 11:58:09,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 81 transitions, 171 flow [2023-11-26 11:58:09,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:58:09,224 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;@6514a7e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:58:09,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-11-26 11:58:09,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:58:09,258 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-26 11:58:09,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:58:09,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:09,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:58:09,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:09,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash 654270978, now seen corresponding path program 1 times [2023-11-26 11:58:09,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:09,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971007004] [2023-11-26 11:58:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:09,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:09,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:09,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971007004] [2023-11-26 11:58:09,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971007004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:09,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:09,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:09,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305070389] [2023-11-26 11:58:09,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:09,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:09,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:09,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:09,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:09,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2023-11-26 11:58:09,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:09,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:09,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2023-11-26 11:58:09,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:10,225 INFO L124 PetriNetUnfolderBase]: 717/1733 cut-off events. [2023-11-26 11:58:10,226 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-26 11:58:10,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2890 conditions, 1733 events. 717/1733 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12439 event pairs, 266 based on Foata normal form. 48/1450 useless extension candidates. Maximal degree in co-relation 2769. Up to 559 conditions per place. [2023-11-26 11:58:10,248 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 44 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2023-11-26 11:58:10,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 93 transitions, 296 flow [2023-11-26 11:58:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2023-11-26 11:58:10,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6911764705882353 [2023-11-26 11:58:10,268 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 235 transitions. [2023-11-26 11:58:10,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 235 transitions. [2023-11-26 11:58:10,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:10,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 235 transitions. [2023-11-26 11:58:10,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-26 11:58:10,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:10,287 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:10,289 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 171 flow. Second operand 4 states and 235 transitions. [2023-11-26 11:58:10,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 93 transitions, 296 flow [2023-11-26 11:58:10,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 93 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:10,304 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 172 flow [2023-11-26 11:58:10,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2023-11-26 11:58:10,311 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -2 predicate places. [2023-11-26 11:58:10,311 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 172 flow [2023-11-26 11:58:10,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:10,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:10,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:58:10,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:58:10,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:10,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:10,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1192435432, now seen corresponding path program 1 times [2023-11-26 11:58:10,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:10,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513615895] [2023-11-26 11:58:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:10,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:10,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:10,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513615895] [2023-11-26 11:58:10,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513615895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:10,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:10,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:10,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491040229] [2023-11-26 11:58:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:10,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:10,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:10,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:10,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2023-11-26 11:58:10,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:10,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:10,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2023-11-26 11:58:10,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:10,838 INFO L124 PetriNetUnfolderBase]: 650/1672 cut-off events. [2023-11-26 11:58:10,839 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-26 11:58:10,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2772 conditions, 1672 events. 650/1672 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12144 event pairs, 220 based on Foata normal form. 0/1407 useless extension candidates. Maximal degree in co-relation 2090. Up to 542 conditions per place. [2023-11-26 11:58:10,853 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 41 selfloop transitions, 7 changer transitions 0/94 dead transitions. [2023-11-26 11:58:10,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 94 transitions, 300 flow [2023-11-26 11:58:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2023-11-26 11:58:10,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7088235294117647 [2023-11-26 11:58:10,856 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 241 transitions. [2023-11-26 11:58:10,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 241 transitions. [2023-11-26 11:58:10,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:10,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 241 transitions. [2023-11-26 11:58:10,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-26 11:58:10,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:10,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:10,861 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 172 flow. Second operand 4 states and 241 transitions. [2023-11-26 11:58:10,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 94 transitions, 300 flow [2023-11-26 11:58:10,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 94 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:10,864 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 184 flow [2023-11-26 11:58:10,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2023-11-26 11:58:10,866 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -2 predicate places. [2023-11-26 11:58:10,866 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 184 flow [2023-11-26 11:58:10,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:10,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:10,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:10,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:58:10,867 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:10,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:10,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1617592362, now seen corresponding path program 1 times [2023-11-26 11:58:10,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:10,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427132437] [2023-11-26 11:58:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:10,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:10,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:10,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427132437] [2023-11-26 11:58:10,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427132437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:10,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:10,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:10,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107575911] [2023-11-26 11:58:10,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:10,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:10,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:10,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:10,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:10,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 85 [2023-11-26 11:58:10,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:10,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:10,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 85 [2023-11-26 11:58:10,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:11,423 INFO L124 PetriNetUnfolderBase]: 1303/2784 cut-off events. [2023-11-26 11:58:11,423 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2023-11-26 11:58:11,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5176 conditions, 2784 events. 1303/2784 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 20398 event pairs, 307 based on Foata normal form. 112/2464 useless extension candidates. Maximal degree in co-relation 1896. Up to 956 conditions per place. [2023-11-26 11:58:11,447 INFO L140 encePairwiseOnDemand]: 70/85 looper letters, 68 selfloop transitions, 10 changer transitions 0/115 dead transitions. [2023-11-26 11:58:11,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 115 transitions, 442 flow [2023-11-26 11:58:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-11-26 11:58:11,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323529411764705 [2023-11-26 11:58:11,449 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-11-26 11:58:11,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-11-26 11:58:11,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:11,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-11-26 11:58:11,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:11,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:11,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:11,453 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 184 flow. Second operand 4 states and 249 transitions. [2023-11-26 11:58:11,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 115 transitions, 442 flow [2023-11-26 11:58:11,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 115 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:58:11,458 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 242 flow [2023-11-26 11:58:11,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2023-11-26 11:58:11,460 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 0 predicate places. [2023-11-26 11:58:11,460 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 242 flow [2023-11-26 11:58:11,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:11,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:11,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:11,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:58:11,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:11,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:11,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1394243563, now seen corresponding path program 1 times [2023-11-26 11:58:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304839054] [2023-11-26 11:58:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:11,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:11,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:11,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304839054] [2023-11-26 11:58:11,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304839054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:11,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:11,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:11,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632868912] [2023-11-26 11:58:11,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:11,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:11,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:11,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:11,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:11,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2023-11-26 11:58:11,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:11,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:11,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2023-11-26 11:58:11,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:11,964 INFO L124 PetriNetUnfolderBase]: 1056/2633 cut-off events. [2023-11-26 11:58:11,964 INFO L125 PetriNetUnfolderBase]: For 927/931 co-relation queries the response was YES. [2023-11-26 11:58:11,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5243 conditions, 2633 events. 1056/2633 cut-off events. For 927/931 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 20763 event pairs, 342 based on Foata normal form. 4/2315 useless extension candidates. Maximal degree in co-relation 1859. Up to 779 conditions per place. [2023-11-26 11:58:11,989 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 47 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2023-11-26 11:58:11,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 99 transitions, 395 flow [2023-11-26 11:58:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2023-11-26 11:58:11,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7088235294117647 [2023-11-26 11:58:11,992 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 241 transitions. [2023-11-26 11:58:11,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 241 transitions. [2023-11-26 11:58:11,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:11,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 241 transitions. [2023-11-26 11:58:11,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-26 11:58:11,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:11,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:11,995 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 242 flow. Second operand 4 states and 241 transitions. [2023-11-26 11:58:11,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 99 transitions, 395 flow [2023-11-26 11:58:12,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 99 transitions, 395 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:58:12,016 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 266 flow [2023-11-26 11:58:12,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2023-11-26 11:58:12,019 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 3 predicate places. [2023-11-26 11:58:12,019 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 266 flow [2023-11-26 11:58:12,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:12,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:12,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:12,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:58:12,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:12,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:12,022 INFO L85 PathProgramCache]: Analyzing trace with hash 824855290, now seen corresponding path program 1 times [2023-11-26 11:58:12,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:12,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129556979] [2023-11-26 11:58:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:12,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:12,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:12,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129556979] [2023-11-26 11:58:12,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129556979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:12,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:12,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:12,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432620919] [2023-11-26 11:58:12,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:12,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:12,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:12,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:12,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:12,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 85 [2023-11-26 11:58:12,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:12,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:12,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 85 [2023-11-26 11:58:12,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:12,818 INFO L124 PetriNetUnfolderBase]: 1837/3800 cut-off events. [2023-11-26 11:58:12,818 INFO L125 PetriNetUnfolderBase]: For 2780/2966 co-relation queries the response was YES. [2023-11-26 11:58:12,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8682 conditions, 3800 events. 1837/3800 cut-off events. For 2780/2966 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 28578 event pairs, 507 based on Foata normal form. 100/3542 useless extension candidates. Maximal degree in co-relation 5726. Up to 1379 conditions per place. [2023-11-26 11:58:12,856 INFO L140 encePairwiseOnDemand]: 74/85 looper letters, 77 selfloop transitions, 10 changer transitions 0/125 dead transitions. [2023-11-26 11:58:12,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 636 flow [2023-11-26 11:58:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:58:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:58:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 293 transitions. [2023-11-26 11:58:12,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6894117647058824 [2023-11-26 11:58:12,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 293 transitions. [2023-11-26 11:58:12,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 293 transitions. [2023-11-26 11:58:12,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:12,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 293 transitions. [2023-11-26 11:58:12,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:12,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:12,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:12,864 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 266 flow. Second operand 5 states and 293 transitions. [2023-11-26 11:58:12,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 636 flow [2023-11-26 11:58:12,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 125 transitions, 618 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:58:12,890 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 309 flow [2023-11-26 11:58:12,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=309, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2023-11-26 11:58:12,891 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 7 predicate places. [2023-11-26 11:58:12,891 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 309 flow [2023-11-26 11:58:12,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:12,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:12,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:12,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:58:12,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:12,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:12,893 INFO L85 PathProgramCache]: Analyzing trace with hash 824856315, now seen corresponding path program 1 times [2023-11-26 11:58:12,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:12,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710477645] [2023-11-26 11:58:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:12,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:12,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:12,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710477645] [2023-11-26 11:58:12,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710477645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:12,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:12,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:12,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10654524] [2023-11-26 11:58:12,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:12,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:12,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:12,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:12,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:13,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 85 [2023-11-26 11:58:13,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:13,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:13,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 85 [2023-11-26 11:58:13,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:13,677 INFO L124 PetriNetUnfolderBase]: 1881/4214 cut-off events. [2023-11-26 11:58:13,678 INFO L125 PetriNetUnfolderBase]: For 3520/3694 co-relation queries the response was YES. [2023-11-26 11:58:13,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10119 conditions, 4214 events. 1881/4214 cut-off events. For 3520/3694 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 34054 event pairs, 512 based on Foata normal form. 130/3970 useless extension candidates. Maximal degree in co-relation 5504. Up to 1312 conditions per place. [2023-11-26 11:58:13,725 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 78 selfloop transitions, 13 changer transitions 0/130 dead transitions. [2023-11-26 11:58:13,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 130 transitions, 697 flow [2023-11-26 11:58:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2023-11-26 11:58:13,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2023-11-26 11:58:13,728 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 245 transitions. [2023-11-26 11:58:13,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 245 transitions. [2023-11-26 11:58:13,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:13,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 245 transitions. [2023-11-26 11:58:13,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:13,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:13,731 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:13,732 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 309 flow. Second operand 4 states and 245 transitions. [2023-11-26 11:58:13,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 130 transitions, 697 flow [2023-11-26 11:58:13,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 687 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:58:13,748 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 381 flow [2023-11-26 11:58:13,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2023-11-26 11:58:13,751 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 10 predicate places. [2023-11-26 11:58:13,751 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 381 flow [2023-11-26 11:58:13,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:13,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:13,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:13,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:58:13,753 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:13,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:13,753 INFO L85 PathProgramCache]: Analyzing trace with hash -199289047, now seen corresponding path program 1 times [2023-11-26 11:58:13,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:13,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422917836] [2023-11-26 11:58:13,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:13,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:13,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:13,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422917836] [2023-11-26 11:58:13,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422917836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:13,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:13,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:58:13,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374533832] [2023-11-26 11:58:13,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:13,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:58:13,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:58:13,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:58:13,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 85 [2023-11-26 11:58:13,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 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) [2023-11-26 11:58:13,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:13,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 85 [2023-11-26 11:58:13,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:14,931 INFO L124 PetriNetUnfolderBase]: 2406/4795 cut-off events. [2023-11-26 11:58:14,931 INFO L125 PetriNetUnfolderBase]: For 5714/5977 co-relation queries the response was YES. [2023-11-26 11:58:14,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12710 conditions, 4795 events. 2406/4795 cut-off events. For 5714/5977 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 36863 event pairs, 697 based on Foata normal form. 265/4716 useless extension candidates. Maximal degree in co-relation 5106. Up to 1448 conditions per place. [2023-11-26 11:58:14,978 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 138 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2023-11-26 11:58:14,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 187 transitions, 1129 flow [2023-11-26 11:58:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:58:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:58:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 420 transitions. [2023-11-26 11:58:14,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2023-11-26 11:58:14,982 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 420 transitions. [2023-11-26 11:58:14,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 420 transitions. [2023-11-26 11:58:14,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:14,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 420 transitions. [2023-11-26 11:58:14,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 52.5) internal successors, (420), 8 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:14,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:14,989 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:14,989 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 381 flow. Second operand 8 states and 420 transitions. [2023-11-26 11:58:14,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 187 transitions, 1129 flow [2023-11-26 11:58:15,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 187 transitions, 1121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:58:15,023 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 430 flow [2023-11-26 11:58:15,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=430, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2023-11-26 11:58:15,025 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 19 predicate places. [2023-11-26 11:58:15,025 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 430 flow [2023-11-26 11:58:15,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 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) [2023-11-26 11:58:15,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:15,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:15,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:58:15,027 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash -271908498, now seen corresponding path program 1 times [2023-11-26 11:58:15,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:15,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268785476] [2023-11-26 11:58:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:15,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:15,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:15,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268785476] [2023-11-26 11:58:15,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268785476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:15,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:15,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:15,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993794451] [2023-11-26 11:58:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:15,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:15,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:15,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:15,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:15,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2023-11-26 11:58:15,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:15,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:15,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2023-11-26 11:58:15,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:15,754 INFO L124 PetriNetUnfolderBase]: 1605/3873 cut-off events. [2023-11-26 11:58:15,754 INFO L125 PetriNetUnfolderBase]: For 7689/8048 co-relation queries the response was YES. [2023-11-26 11:58:15,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10525 conditions, 3873 events. 1605/3873 cut-off events. For 7689/8048 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 32500 event pairs, 624 based on Foata normal form. 276/3723 useless extension candidates. Maximal degree in co-relation 9102. Up to 1343 conditions per place. [2023-11-26 11:58:15,800 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 65 selfloop transitions, 7 changer transitions 0/114 dead transitions. [2023-11-26 11:58:15,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 114 transitions, 724 flow [2023-11-26 11:58:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2023-11-26 11:58:15,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2023-11-26 11:58:15,803 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 232 transitions. [2023-11-26 11:58:15,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 232 transitions. [2023-11-26 11:58:15,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:15,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 232 transitions. [2023-11-26 11:58:15,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:15,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:15,863 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:15,863 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 430 flow. Second operand 4 states and 232 transitions. [2023-11-26 11:58:15,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 114 transitions, 724 flow [2023-11-26 11:58:15,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 114 transitions, 709 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:15,908 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 431 flow [2023-11-26 11:58:15,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=431, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-11-26 11:58:15,912 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 18 predicate places. [2023-11-26 11:58:15,913 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 431 flow [2023-11-26 11:58:15,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:15,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:15,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:15,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:58:15,914 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:15,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:15,914 INFO L85 PathProgramCache]: Analyzing trace with hash -935675328, now seen corresponding path program 1 times [2023-11-26 11:58:15,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:15,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336014476] [2023-11-26 11:58:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:15,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:15,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336014476] [2023-11-26 11:58:15,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336014476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:15,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:15,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:58:15,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912079513] [2023-11-26 11:58:15,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:15,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:15,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:15,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:15,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:16,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 85 [2023-11-26 11:58:16,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:16,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:16,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 85 [2023-11-26 11:58:16,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:16,797 INFO L124 PetriNetUnfolderBase]: 1859/3828 cut-off events. [2023-11-26 11:58:16,797 INFO L125 PetriNetUnfolderBase]: For 6246/6409 co-relation queries the response was YES. [2023-11-26 11:58:16,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11033 conditions, 3828 events. 1859/3828 cut-off events. For 6246/6409 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 28849 event pairs, 685 based on Foata normal form. 214/3836 useless extension candidates. Maximal degree in co-relation 9964. Up to 1284 conditions per place. [2023-11-26 11:58:16,833 INFO L140 encePairwiseOnDemand]: 71/85 looper letters, 115 selfloop transitions, 16 changer transitions 0/165 dead transitions. [2023-11-26 11:58:16,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 165 transitions, 1045 flow [2023-11-26 11:58:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:58:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:58:16,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 336 transitions. [2023-11-26 11:58:16,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2023-11-26 11:58:16,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 336 transitions. [2023-11-26 11:58:16,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 336 transitions. [2023-11-26 11:58:16,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:16,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 336 transitions. [2023-11-26 11:58:16,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:16,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:16,840 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:16,840 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 431 flow. Second operand 6 states and 336 transitions. [2023-11-26 11:58:16,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 165 transitions, 1045 flow [2023-11-26 11:58:16,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 165 transitions, 1001 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:16,882 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 440 flow [2023-11-26 11:58:16,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=440, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2023-11-26 11:58:16,884 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 19 predicate places. [2023-11-26 11:58:16,884 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 440 flow [2023-11-26 11:58:16,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:16,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:16,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:16,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:58:16,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:16,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:16,885 INFO L85 PathProgramCache]: Analyzing trace with hash 160770903, now seen corresponding path program 1 times [2023-11-26 11:58:16,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:16,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086457063] [2023-11-26 11:58:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:16,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:16,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086457063] [2023-11-26 11:58:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086457063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:16,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:16,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:16,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591997588] [2023-11-26 11:58:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:16,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:16,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:16,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:17,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 85 [2023-11-26 11:58:17,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:17,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:17,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 85 [2023-11-26 11:58:17,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:17,810 INFO L124 PetriNetUnfolderBase]: 2073/4006 cut-off events. [2023-11-26 11:58:17,810 INFO L125 PetriNetUnfolderBase]: For 12775/13188 co-relation queries the response was YES. [2023-11-26 11:58:17,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12823 conditions, 4006 events. 2073/4006 cut-off events. For 12775/13188 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 29266 event pairs, 507 based on Foata normal form. 314/4087 useless extension candidates. Maximal degree in co-relation 11551. Up to 1651 conditions per place. [2023-11-26 11:58:17,860 INFO L140 encePairwiseOnDemand]: 74/85 looper letters, 88 selfloop transitions, 12 changer transitions 0/136 dead transitions. [2023-11-26 11:58:17,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 136 transitions, 988 flow [2023-11-26 11:58:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:58:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:58:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 292 transitions. [2023-11-26 11:58:17,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6870588235294117 [2023-11-26 11:58:17,863 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 292 transitions. [2023-11-26 11:58:17,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 292 transitions. [2023-11-26 11:58:17,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:17,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 292 transitions. [2023-11-26 11:58:17,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:17,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:17,867 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:17,868 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 440 flow. Second operand 5 states and 292 transitions. [2023-11-26 11:58:17,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 136 transitions, 988 flow [2023-11-26 11:58:17,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 136 transitions, 931 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:17,895 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 465 flow [2023-11-26 11:58:17,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-11-26 11:58:17,896 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 21 predicate places. [2023-11-26 11:58:17,896 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 465 flow [2023-11-26 11:58:17,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:17,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:17,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:17,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:58:17,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:17,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:17,898 INFO L85 PathProgramCache]: Analyzing trace with hash 160771928, now seen corresponding path program 1 times [2023-11-26 11:58:17,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:17,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755051604] [2023-11-26 11:58:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:17,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:17,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:17,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755051604] [2023-11-26 11:58:17,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755051604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:17,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:17,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:17,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279136044] [2023-11-26 11:58:17,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:17,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:17,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:17,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:17,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:18,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 85 [2023-11-26 11:58:18,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:18,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:18,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 85 [2023-11-26 11:58:18,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:18,645 INFO L124 PetriNetUnfolderBase]: 1565/3468 cut-off events. [2023-11-26 11:58:18,645 INFO L125 PetriNetUnfolderBase]: For 10360/10652 co-relation queries the response was YES. [2023-11-26 11:58:18,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10791 conditions, 3468 events. 1565/3468 cut-off events. For 10360/10652 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 27229 event pairs, 507 based on Foata normal form. 302/3578 useless extension candidates. Maximal degree in co-relation 9788. Up to 1063 conditions per place. [2023-11-26 11:58:18,679 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 90 selfloop transitions, 9 changer transitions 0/135 dead transitions. [2023-11-26 11:58:18,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 135 transitions, 965 flow [2023-11-26 11:58:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2023-11-26 11:58:18,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7088235294117647 [2023-11-26 11:58:18,682 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 241 transitions. [2023-11-26 11:58:18,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 241 transitions. [2023-11-26 11:58:18,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:18,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 241 transitions. [2023-11-26 11:58:18,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-26 11:58:18,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:18,685 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:18,685 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 465 flow. Second operand 4 states and 241 transitions. [2023-11-26 11:58:18,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 135 transitions, 965 flow [2023-11-26 11:58:18,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 135 transitions, 955 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:58:18,708 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 461 flow [2023-11-26 11:58:18,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=461, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2023-11-26 11:58:18,709 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 22 predicate places. [2023-11-26 11:58:18,709 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 461 flow [2023-11-26 11:58:18,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:18,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:18,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:18,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:58:18,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:18,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:18,711 INFO L85 PathProgramCache]: Analyzing trace with hash 688931473, now seen corresponding path program 1 times [2023-11-26 11:58:18,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:18,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544702068] [2023-11-26 11:58:18,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:18,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:18,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:18,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544702068] [2023-11-26 11:58:18,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544702068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:18,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:18,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:58:18,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230310980] [2023-11-26 11:58:18,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:18,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:58:18,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:18,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:58:18,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:58:18,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 85 [2023-11-26 11:58:18,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 461 flow. Second operand has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:18,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:18,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 85 [2023-11-26 11:58:18,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:19,705 INFO L124 PetriNetUnfolderBase]: 2096/3925 cut-off events. [2023-11-26 11:58:19,705 INFO L125 PetriNetUnfolderBase]: For 13371/13795 co-relation queries the response was YES. [2023-11-26 11:58:19,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13125 conditions, 3925 events. 2096/3925 cut-off events. For 13371/13795 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 28017 event pairs, 660 based on Foata normal form. 436/4183 useless extension candidates. Maximal degree in co-relation 11908. Up to 1383 conditions per place. [2023-11-26 11:58:19,758 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 158 selfloop transitions, 13 changer transitions 0/204 dead transitions. [2023-11-26 11:58:19,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 204 transitions, 1584 flow [2023-11-26 11:58:19,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:58:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:58:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 419 transitions. [2023-11-26 11:58:19,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161764705882353 [2023-11-26 11:58:19,762 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 419 transitions. [2023-11-26 11:58:19,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 419 transitions. [2023-11-26 11:58:19,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:19,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 419 transitions. [2023-11-26 11:58:19,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 52.375) internal successors, (419), 8 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:19,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:19,767 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:19,767 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 461 flow. Second operand 8 states and 419 transitions. [2023-11-26 11:58:19,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 204 transitions, 1584 flow [2023-11-26 11:58:19,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 204 transitions, 1577 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:58:19,798 INFO L231 Difference]: Finished difference. Result has 111 places, 89 transitions, 511 flow [2023-11-26 11:58:19,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=511, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2023-11-26 11:58:19,799 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 31 predicate places. [2023-11-26 11:58:19,799 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 511 flow [2023-11-26 11:58:19,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:19,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:19,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:19,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:58:19,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:19,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1374460192, now seen corresponding path program 1 times [2023-11-26 11:58:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:19,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938854300] [2023-11-26 11:58:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:19,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:19,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938854300] [2023-11-26 11:58:19,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938854300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:19,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:19,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:19,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876778140] [2023-11-26 11:58:19,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:19,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:19,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:19,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:19,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:19,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2023-11-26 11:58:19,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 511 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:19,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:19,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2023-11-26 11:58:19,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:20,389 INFO L124 PetriNetUnfolderBase]: 1270/2904 cut-off events. [2023-11-26 11:58:20,389 INFO L125 PetriNetUnfolderBase]: For 11501/11826 co-relation queries the response was YES. [2023-11-26 11:58:20,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10461 conditions, 2904 events. 1270/2904 cut-off events. For 11501/11826 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 22509 event pairs, 405 based on Foata normal form. 235/3055 useless extension candidates. Maximal degree in co-relation 9449. Up to 1117 conditions per place. [2023-11-26 11:58:20,423 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 61 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2023-11-26 11:58:20,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 811 flow [2023-11-26 11:58:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2023-11-26 11:58:20,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7029411764705882 [2023-11-26 11:58:20,425 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 239 transitions. [2023-11-26 11:58:20,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 239 transitions. [2023-11-26 11:58:20,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:20,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 239 transitions. [2023-11-26 11:58:20,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:20,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:20,428 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:20,428 INFO L175 Difference]: Start difference. First operand has 111 places, 89 transitions, 511 flow. Second operand 4 states and 239 transitions. [2023-11-26 11:58:20,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 811 flow [2023-11-26 11:58:20,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 792 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:20,469 INFO L231 Difference]: Finished difference. Result has 111 places, 89 transitions, 534 flow [2023-11-26 11:58:20,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=534, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2023-11-26 11:58:20,470 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 31 predicate places. [2023-11-26 11:58:20,470 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 534 flow [2023-11-26 11:58:20,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:20,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:20,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:20,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:58:20,471 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:20,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 829357053, now seen corresponding path program 1 times [2023-11-26 11:58:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:20,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677430744] [2023-11-26 11:58:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:20,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:20,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677430744] [2023-11-26 11:58:20,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677430744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:20,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:20,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:58:20,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727857390] [2023-11-26 11:58:20,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:20,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:20,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:20,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:20,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 85 [2023-11-26 11:58:20,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 534 flow. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:20,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:20,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 85 [2023-11-26 11:58:20,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:21,259 INFO L124 PetriNetUnfolderBase]: 1955/3677 cut-off events. [2023-11-26 11:58:21,260 INFO L125 PetriNetUnfolderBase]: For 17432/17786 co-relation queries the response was YES. [2023-11-26 11:58:21,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14020 conditions, 3677 events. 1955/3677 cut-off events. For 17432/17786 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 25895 event pairs, 645 based on Foata normal form. 360/3975 useless extension candidates. Maximal degree in co-relation 12817. Up to 1357 conditions per place. [2023-11-26 11:58:21,300 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 140 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2023-11-26 11:58:21,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 187 transitions, 1602 flow [2023-11-26 11:58:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:58:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:58:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 335 transitions. [2023-11-26 11:58:21,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2023-11-26 11:58:21,303 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 335 transitions. [2023-11-26 11:58:21,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 335 transitions. [2023-11-26 11:58:21,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:21,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 335 transitions. [2023-11-26 11:58:21,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:21,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:21,307 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:21,307 INFO L175 Difference]: Start difference. First operand has 111 places, 89 transitions, 534 flow. Second operand 6 states and 335 transitions. [2023-11-26 11:58:21,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 187 transitions, 1602 flow [2023-11-26 11:58:21,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 187 transitions, 1560 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:21,376 INFO L231 Difference]: Finished difference. Result has 113 places, 91 transitions, 573 flow [2023-11-26 11:58:21,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=113, PETRI_TRANSITIONS=91} [2023-11-26 11:58:21,377 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 33 predicate places. [2023-11-26 11:58:21,377 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 91 transitions, 573 flow [2023-11-26 11:58:21,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:21,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:21,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:21,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:58:21,378 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:21,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash 341375984, now seen corresponding path program 1 times [2023-11-26 11:58:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:21,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230722684] [2023-11-26 11:58:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:21,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:21,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:21,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230722684] [2023-11-26 11:58:21,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230722684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:21,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:21,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:21,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000291066] [2023-11-26 11:58:21,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:21,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:21,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:21,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:21,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:21,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2023-11-26 11:58:21,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 91 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:21,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:21,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2023-11-26 11:58:21,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:21,949 INFO L124 PetriNetUnfolderBase]: 1211/2875 cut-off events. [2023-11-26 11:58:21,950 INFO L125 PetriNetUnfolderBase]: For 13191/13409 co-relation queries the response was YES. [2023-11-26 11:58:21,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10972 conditions, 2875 events. 1211/2875 cut-off events. For 13191/13409 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 22485 event pairs, 507 based on Foata normal form. 218/3048 useless extension candidates. Maximal degree in co-relation 9942. Up to 1062 conditions per place. [2023-11-26 11:58:21,986 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 64 selfloop transitions, 7 changer transitions 0/113 dead transitions. [2023-11-26 11:58:21,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 890 flow [2023-11-26 11:58:21,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2023-11-26 11:58:21,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6705882352941176 [2023-11-26 11:58:21,988 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 228 transitions. [2023-11-26 11:58:21,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 228 transitions. [2023-11-26 11:58:21,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:21,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 228 transitions. [2023-11-26 11:58:21,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:21,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:21,992 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:21,992 INFO L175 Difference]: Start difference. First operand has 113 places, 91 transitions, 573 flow. Second operand 4 states and 228 transitions. [2023-11-26 11:58:21,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 890 flow [2023-11-26 11:58:22,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 817 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-26 11:58:22,041 INFO L231 Difference]: Finished difference. Result has 109 places, 90 transitions, 542 flow [2023-11-26 11:58:22,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=109, PETRI_TRANSITIONS=90} [2023-11-26 11:58:22,044 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 29 predicate places. [2023-11-26 11:58:22,045 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 90 transitions, 542 flow [2023-11-26 11:58:22,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:22,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:22,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:22,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:58:22,046 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:22,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:22,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1992720642, now seen corresponding path program 1 times [2023-11-26 11:58:22,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:22,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163156045] [2023-11-26 11:58:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:22,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:22,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:22,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163156045] [2023-11-26 11:58:22,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163156045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:22,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:22,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:22,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592681045] [2023-11-26 11:58:22,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:22,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:22,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:22,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:22,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:22,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 85 [2023-11-26 11:58:22,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 90 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:22,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:22,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 85 [2023-11-26 11:58:22,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:22,814 INFO L124 PetriNetUnfolderBase]: 1919/3623 cut-off events. [2023-11-26 11:58:22,814 INFO L125 PetriNetUnfolderBase]: For 13190/13523 co-relation queries the response was YES. [2023-11-26 11:58:22,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13427 conditions, 3623 events. 1919/3623 cut-off events. For 13190/13523 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 25135 event pairs, 405 based on Foata normal form. 325/3927 useless extension candidates. Maximal degree in co-relation 12144. Up to 1615 conditions per place. [2023-11-26 11:58:22,853 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 91 selfloop transitions, 12 changer transitions 0/135 dead transitions. [2023-11-26 11:58:22,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 135 transitions, 1030 flow [2023-11-26 11:58:22,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:58:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:58:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 289 transitions. [2023-11-26 11:58:22,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2023-11-26 11:58:22,855 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 289 transitions. [2023-11-26 11:58:22,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 289 transitions. [2023-11-26 11:58:22,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:22,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 289 transitions. [2023-11-26 11:58:22,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:22,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:22,859 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:22,859 INFO L175 Difference]: Start difference. First operand has 109 places, 90 transitions, 542 flow. Second operand 5 states and 289 transitions. [2023-11-26 11:58:22,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 135 transitions, 1030 flow [2023-11-26 11:58:22,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 135 transitions, 986 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-26 11:58:22,964 INFO L231 Difference]: Finished difference. Result has 106 places, 89 transitions, 518 flow [2023-11-26 11:58:22,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=106, PETRI_TRANSITIONS=89} [2023-11-26 11:58:22,966 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 26 predicate places. [2023-11-26 11:58:22,966 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 89 transitions, 518 flow [2023-11-26 11:58:22,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:22,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:22,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:22,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:58:22,968 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:22,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1690422787, now seen corresponding path program 1 times [2023-11-26 11:58:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:22,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299718909] [2023-11-26 11:58:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:22,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:23,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:23,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299718909] [2023-11-26 11:58:23,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299718909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:23,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:23,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:23,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2215927] [2023-11-26 11:58:23,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:23,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:23,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:23,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2023-11-26 11:58:23,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 89 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:23,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:23,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2023-11-26 11:58:23,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:23,689 INFO L124 PetriNetUnfolderBase]: 1335/3021 cut-off events. [2023-11-26 11:58:23,689 INFO L125 PetriNetUnfolderBase]: For 12083/12317 co-relation queries the response was YES. [2023-11-26 11:58:23,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10837 conditions, 3021 events. 1335/3021 cut-off events. For 12083/12317 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 23063 event pairs, 429 based on Foata normal form. 212/3193 useless extension candidates. Maximal degree in co-relation 9989. Up to 1176 conditions per place. [2023-11-26 11:58:23,717 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 67 selfloop transitions, 7 changer transitions 0/113 dead transitions. [2023-11-26 11:58:23,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 113 transitions, 854 flow [2023-11-26 11:58:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2023-11-26 11:58:23,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7029411764705882 [2023-11-26 11:58:23,719 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 239 transitions. [2023-11-26 11:58:23,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 239 transitions. [2023-11-26 11:58:23,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:23,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 239 transitions. [2023-11-26 11:58:23,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:23,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:23,722 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:23,722 INFO L175 Difference]: Start difference. First operand has 106 places, 89 transitions, 518 flow. Second operand 4 states and 239 transitions. [2023-11-26 11:58:23,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 113 transitions, 854 flow [2023-11-26 11:58:23,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 113 transitions, 835 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:58:23,764 INFO L231 Difference]: Finished difference. Result has 107 places, 89 transitions, 541 flow [2023-11-26 11:58:23,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=541, PETRI_PLACES=107, PETRI_TRANSITIONS=89} [2023-11-26 11:58:23,765 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 27 predicate places. [2023-11-26 11:58:23,765 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 89 transitions, 541 flow [2023-11-26 11:58:23,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:23,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:23,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:23,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 11:58:23,766 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:23,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1644798515, now seen corresponding path program 1 times [2023-11-26 11:58:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:23,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456659088] [2023-11-26 11:58:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:23,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456659088] [2023-11-26 11:58:23,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456659088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:23,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:23,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:58:23,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723396236] [2023-11-26 11:58:23,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:23,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:58:23,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:23,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:58:23,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:58:23,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 85 [2023-11-26 11:58:23,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 89 transitions, 541 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:23,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:23,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 85 [2023-11-26 11:58:23,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:24,609 INFO L124 PetriNetUnfolderBase]: 1645/3287 cut-off events. [2023-11-26 11:58:24,609 INFO L125 PetriNetUnfolderBase]: For 14078/14344 co-relation queries the response was YES. [2023-11-26 11:58:24,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12508 conditions, 3287 events. 1645/3287 cut-off events. For 14078/14344 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 23460 event pairs, 537 based on Foata normal form. 286/3516 useless extension candidates. Maximal degree in co-relation 11737. Up to 1118 conditions per place. [2023-11-26 11:58:24,642 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 143 selfloop transitions, 14 changer transitions 18/208 dead transitions. [2023-11-26 11:58:24,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 208 transitions, 1787 flow [2023-11-26 11:58:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:58:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:58:24,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 411 transitions. [2023-11-26 11:58:24,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6044117647058823 [2023-11-26 11:58:24,645 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 411 transitions. [2023-11-26 11:58:24,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 411 transitions. [2023-11-26 11:58:24,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:24,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 411 transitions. [2023-11-26 11:58:24,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 51.375) internal successors, (411), 8 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:24,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:24,650 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:24,650 INFO L175 Difference]: Start difference. First operand has 107 places, 89 transitions, 541 flow. Second operand 8 states and 411 transitions. [2023-11-26 11:58:24,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 208 transitions, 1787 flow [2023-11-26 11:58:24,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 208 transitions, 1748 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:24,681 INFO L231 Difference]: Finished difference. Result has 110 places, 85 transitions, 520 flow [2023-11-26 11:58:24,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=520, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2023-11-26 11:58:24,682 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 30 predicate places. [2023-11-26 11:58:24,682 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 520 flow [2023-11-26 11:58:24,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:24,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:24,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:24,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:58:24,683 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:24,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:24,683 INFO L85 PathProgramCache]: Analyzing trace with hash -863529832, now seen corresponding path program 1 times [2023-11-26 11:58:24,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:24,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381815024] [2023-11-26 11:58:24,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:24,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:24,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:24,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381815024] [2023-11-26 11:58:24,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381815024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:24,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:24,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:24,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425759312] [2023-11-26 11:58:24,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:24,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:24,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:24,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:24,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:24,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2023-11-26 11:58:24,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 520 flow. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:24,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:24,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2023-11-26 11:58:24,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:25,187 INFO L124 PetriNetUnfolderBase]: 1135/2724 cut-off events. [2023-11-26 11:58:25,187 INFO L125 PetriNetUnfolderBase]: For 11948/12134 co-relation queries the response was YES. [2023-11-26 11:58:25,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9887 conditions, 2724 events. 1135/2724 cut-off events. For 11948/12134 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21227 event pairs, 483 based on Foata normal form. 208/2892 useless extension candidates. Maximal degree in co-relation 8997. Up to 942 conditions per place. [2023-11-26 11:58:25,210 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 66 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2023-11-26 11:58:25,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 843 flow [2023-11-26 11:58:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2023-11-26 11:58:25,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6676470588235294 [2023-11-26 11:58:25,213 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 227 transitions. [2023-11-26 11:58:25,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 227 transitions. [2023-11-26 11:58:25,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:25,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 227 transitions. [2023-11-26 11:58:25,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:25,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:25,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:25,216 INFO L175 Difference]: Start difference. First operand has 110 places, 85 transitions, 520 flow. Second operand 4 states and 227 transitions. [2023-11-26 11:58:25,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 843 flow [2023-11-26 11:58:25,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 766 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-26 11:58:25,248 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 476 flow [2023-11-26 11:58:25,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=476, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2023-11-26 11:58:25,249 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 22 predicate places. [2023-11-26 11:58:25,249 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 476 flow [2023-11-26 11:58:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:25,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:25,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:25,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:58:25,250 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:25,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:25,251 INFO L85 PathProgramCache]: Analyzing trace with hash -999621249, now seen corresponding path program 1 times [2023-11-26 11:58:25,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:25,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451029268] [2023-11-26 11:58:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:25,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:25,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451029268] [2023-11-26 11:58:25,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451029268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:25,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:25,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:25,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518869538] [2023-11-26 11:58:25,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:25,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:25,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:25,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:25,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:25,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 85 [2023-11-26 11:58:25,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 476 flow. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 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) [2023-11-26 11:58:25,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:25,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 85 [2023-11-26 11:58:25,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:25,883 INFO L124 PetriNetUnfolderBase]: 1879/3460 cut-off events. [2023-11-26 11:58:25,884 INFO L125 PetriNetUnfolderBase]: For 11971/12251 co-relation queries the response was YES. [2023-11-26 11:58:25,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12296 conditions, 3460 events. 1879/3460 cut-off events. For 11971/12251 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 23454 event pairs, 375 based on Foata normal form. 318/3753 useless extension candidates. Maximal degree in co-relation 10900. Up to 1700 conditions per place. [2023-11-26 11:58:25,907 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 92 selfloop transitions, 9 changer transitions 2/131 dead transitions. [2023-11-26 11:58:25,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 986 flow [2023-11-26 11:58:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:58:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:58:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2023-11-26 11:58:25,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6776470588235294 [2023-11-26 11:58:25,916 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 288 transitions. [2023-11-26 11:58:25,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 288 transitions. [2023-11-26 11:58:25,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:25,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 288 transitions. [2023-11-26 11:58:25,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:25,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:25,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:25,921 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 476 flow. Second operand 5 states and 288 transitions. [2023-11-26 11:58:25,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 986 flow [2023-11-26 11:58:25,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 131 transitions, 962 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:58:25,961 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 456 flow [2023-11-26 11:58:25,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=456, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2023-11-26 11:58:25,962 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 21 predicate places. [2023-11-26 11:58:25,963 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 456 flow [2023-11-26 11:58:25,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 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) [2023-11-26 11:58:25,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:25,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:25,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:58:25,964 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-11-26 11:58:25,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:25,965 INFO L85 PathProgramCache]: Analyzing trace with hash -923486853, now seen corresponding path program 1 times [2023-11-26 11:58:25,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:25,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158706615] [2023-11-26 11:58:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:25,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:26,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:26,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158706615] [2023-11-26 11:58:26,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158706615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:26,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:26,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:58:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830715230] [2023-11-26 11:58:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:58:26,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:58:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:58:26,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 85 [2023-11-26 11:58:26,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 456 flow. Second operand has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 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) [2023-11-26 11:58:26,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:26,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 85 [2023-11-26 11:58:26,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:26,763 INFO L124 PetriNetUnfolderBase]: 1383/2760 cut-off events. [2023-11-26 11:58:26,763 INFO L125 PetriNetUnfolderBase]: For 9097/9301 co-relation queries the response was YES. [2023-11-26 11:58:26,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9960 conditions, 2760 events. 1383/2760 cut-off events. For 9097/9301 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 19201 event pairs, 483 based on Foata normal form. 258/2991 useless extension candidates. Maximal degree in co-relation 9941. Up to 942 conditions per place. [2023-11-26 11:58:26,781 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 0 selfloop transitions, 0 changer transitions 200/200 dead transitions. [2023-11-26 11:58:26,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 200 transitions, 1582 flow [2023-11-26 11:58:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:58:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:58:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 408 transitions. [2023-11-26 11:58:26,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-26 11:58:26,784 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 408 transitions. [2023-11-26 11:58:26,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 408 transitions. [2023-11-26 11:58:26,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:26,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 408 transitions. [2023-11-26 11:58:26,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:26,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:26,789 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:26,789 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 456 flow. Second operand 8 states and 408 transitions. [2023-11-26 11:58:26,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 200 transitions, 1582 flow [2023-11-26 11:58:26,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 200 transitions, 1574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:58:26,815 INFO L231 Difference]: Finished difference. Result has 104 places, 0 transitions, 0 flow [2023-11-26 11:58:26,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=104, PETRI_TRANSITIONS=0} [2023-11-26 11:58:26,816 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 24 predicate places. [2023-11-26 11:58:26,816 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 0 transitions, 0 flow [2023-11-26 11:58:26,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 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) [2023-11-26 11:58:26,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 50 remaining) [2023-11-26 11:58:26,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 50 remaining) [2023-11-26 11:58:26,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 50 remaining) [2023-11-26 11:58:26,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 50 remaining) [2023-11-26 11:58:26,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 50 remaining) [2023-11-26 11:58:26,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 50 remaining) [2023-11-26 11:58:26,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 50 remaining) [2023-11-26 11:58:26,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 50 remaining) [2023-11-26 11:58:26,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 50 remaining) [2023-11-26 11:58:26,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 50 remaining) [2023-11-26 11:58:26,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 50 remaining) [2023-11-26 11:58:26,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 50 remaining) [2023-11-26 11:58:26,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 50 remaining) [2023-11-26 11:58:26,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 50 remaining) [2023-11-26 11:58:26,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 50 remaining) [2023-11-26 11:58:26,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 50 remaining) [2023-11-26 11:58:26,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 50 remaining) [2023-11-26 11:58:26,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 50 remaining) [2023-11-26 11:58:26,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 50 remaining) [2023-11-26 11:58:26,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 50 remaining) [2023-11-26 11:58:26,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 50 remaining) [2023-11-26 11:58:26,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 50 remaining) [2023-11-26 11:58:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 50 remaining) [2023-11-26 11:58:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 50 remaining) [2023-11-26 11:58:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 50 remaining) [2023-11-26 11:58:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 50 remaining) [2023-11-26 11:58:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 50 remaining) [2023-11-26 11:58:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 50 remaining) [2023-11-26 11:58:26,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 50 remaining) [2023-11-26 11:58:26,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 50 remaining) [2023-11-26 11:58:26,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 50 remaining) [2023-11-26 11:58:26,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 50 remaining) [2023-11-26 11:58:26,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 50 remaining) [2023-11-26 11:58:26,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 50 remaining) [2023-11-26 11:58:26,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 50 remaining) [2023-11-26 11:58:26,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 50 remaining) [2023-11-26 11:58:26,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 50 remaining) [2023-11-26 11:58:26,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 50 remaining) [2023-11-26 11:58:26,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 50 remaining) [2023-11-26 11:58:26,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 50 remaining) [2023-11-26 11:58:26,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 50 remaining) [2023-11-26 11:58:26,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 50 remaining) [2023-11-26 11:58:26,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 50 remaining) [2023-11-26 11:58:26,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 50 remaining) [2023-11-26 11:58:26,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 50 remaining) [2023-11-26 11:58:26,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 50 remaining) [2023-11-26 11:58:26,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 50 remaining) [2023-11-26 11:58:26,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 50 remaining) [2023-11-26 11:58:26,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 50 remaining) [2023-11-26 11:58:26,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 50 remaining) [2023-11-26 11:58:26,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 11:58:26,829 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:26,835 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:58:26,836 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:58:26,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:58:26 BasicIcfg [2023-11-26 11:58:26,842 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:58:26,842 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:58:26,842 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:58:26,843 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:58:26,843 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:08" (3/4) ... [2023-11-26 11:58:26,845 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:58:26,848 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-26 11:58:26,848 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-26 11:58:26,854 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 82 nodes and edges [2023-11-26 11:58:26,855 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-26 11:58:26,855 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-26 11:58:26,855 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:58:26,947 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:58:26,947 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:58:26,948 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:58:26,948 INFO L158 Benchmark]: Toolchain (without parser) took 19711.86ms. Allocated memory was 142.6MB in the beginning and 926.9MB in the end (delta: 784.3MB). Free memory was 107.3MB in the beginning and 304.4MB in the end (delta: -197.1MB). Peak memory consumption was 588.4MB. Max. memory is 16.1GB. [2023-11-26 11:58:26,949 INFO L158 Benchmark]: CDTParser took 1.27ms. Allocated memory is still 107.0MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:58:26,949 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.27ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 95.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:58:26,949 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.49ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 93.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:58:26,950 INFO L158 Benchmark]: Boogie Preprocessor took 59.99ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 90.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:58:26,950 INFO L158 Benchmark]: RCFGBuilder took 1274.19ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 72.4MB in the end (delta: 18.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-11-26 11:58:26,951 INFO L158 Benchmark]: TraceAbstraction took 17921.62ms. Allocated memory was 142.6MB in the beginning and 926.9MB in the end (delta: 784.3MB). Free memory was 71.9MB in the beginning and 308.6MB in the end (delta: -236.7MB). Peak memory consumption was 547.6MB. Max. memory is 16.1GB. [2023-11-26 11:58:26,951 INFO L158 Benchmark]: Witness Printer took 105.57ms. Allocated memory is still 926.9MB. Free memory was 308.6MB in the beginning and 304.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:58:26,953 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27ms. Allocated memory is still 107.0MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.27ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 95.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.49ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 93.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.99ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 90.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1274.19ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 72.4MB in the end (delta: 18.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * TraceAbstraction took 17921.62ms. Allocated memory was 142.6MB in the beginning and 926.9MB in the end (delta: 784.3MB). Free memory was 71.9MB in the beginning and 308.6MB in the end (delta: -236.7MB). Peak memory consumption was 547.6MB. Max. memory is 16.1GB. * Witness Printer took 105.57ms. Allocated memory is still 926.9MB. Free memory was 308.6MB in the beginning and 304.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 148 locations, 50 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.7s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2605 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2007 mSDsluCounter, 492 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 241 mSDsCounter, 265 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4128 IncrementalHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 265 mSolverCounterUnsat, 251 mSDtfsCounter, 4128 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=573occurred in iteration=14, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 229 NumberOfCodeBlocks, 229 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 862 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 24 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:58:26,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f66bbc-f2d3-4780-b218-9df24d1a03cf/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE