./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:23:29,205 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:23:29,318 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:23:29,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:23:29,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:23:29,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:23:29,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:23:29,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:23:29,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:23:29,381 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:23:29,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:23:29,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:23:29,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:23:29,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:23:29,386 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:23:29,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:23:29,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:23:29,388 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:23:29,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:23:29,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:23:29,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:23:29,391 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:23:29,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:23:29,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:23:29,393 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:23:29,393 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:23:29,394 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:23:29,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:23:29,395 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:23:29,396 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:23:29,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:23:29,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:23:29,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:23:29,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:23:29,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:23:29,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:23:29,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:23:29,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:23:29,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:23:29,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:23:29,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:23:29,403 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:23:29,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:23:29,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:23:29,404 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_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2023-11-23 22:23:29,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:23:29,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:23:29,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:23:29,740 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:23:29,740 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:23:29,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2023-11-23 22:23:32,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:23:33,393 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:23:33,394 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/sv-benchmarks/c/pthread/triangular-longer-1.i [2023-11-23 22:23:33,419 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/data/84ed98357/4e34631731634cd9b526a81cd6c6171f/FLAGf1e744e9a [2023-11-23 22:23:33,436 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/data/84ed98357/4e34631731634cd9b526a81cd6c6171f [2023-11-23 22:23:33,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:23:33,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:23:33,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:23:33,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:23:33,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:23:33,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:23:33" (1/1) ... [2023-11-23 22:23:33,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb6f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:33, skipping insertion in model container [2023-11-23 22:23:33,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:23:33" (1/1) ... [2023-11-23 22:23:33,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:23:33,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:23:33,950 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:23:34,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:23:34,055 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:23:34,056 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:23:34,064 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:23:34,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34 WrapperNode [2023-11-23 22:23:34,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:23:34,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:23:34,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:23:34,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:23:34,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,114 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-23 22:23:34,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:23:34,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:23:34,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:23:34,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:23:34,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,132 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,146 INFO L189 HeapSplitter]: Split 4 memory accesses to 3 slices as follows [2, 1, 1] [2023-11-23 22:23:34,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,173 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,180 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:23:34,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:23:34,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:23:34,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:23:34,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:23:34,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:34,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:23:34,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:23:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-23 22:23:34,272 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-23 22:23:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-23 22:23:34,273 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-23 22:23:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:23:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:23:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:23:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:23:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:23:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:23:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:23:34,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:23:34,278 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:23:34,432 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:23:34,435 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:23:34,659 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:23:34,916 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:23:34,917 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 22:23:34,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:23:34 BoogieIcfgContainer [2023-11-23 22:23:34,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:23:34,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:23:34,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:23:34,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:23:34,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:23:33" (1/3) ... [2023-11-23 22:23:34,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd97e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:23:34, skipping insertion in model container [2023-11-23 22:23:34,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (2/3) ... [2023-11-23 22:23:34,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd97e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:23:34, skipping insertion in model container [2023-11-23 22:23:34,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:23:34" (3/3) ... [2023-11-23 22:23:34,928 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2023-11-23 22:23:34,939 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:23:34,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:23:34,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 22:23:34,952 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:23:35,030 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:23:35,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2023-11-23 22:23:35,103 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2023-11-23 22:23:35,103 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:23:35,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-23 22:23:35,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2023-11-23 22:23:35,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2023-11-23 22:23:35,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:23:35,135 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;@51268350, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:23:35,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-23 22:23:35,156 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:23:35,156 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-23 22:23:35,157 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:23:35,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:35,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 22:23:35,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:35,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:35,165 INFO L85 PathProgramCache]: Analyzing trace with hash 223253781, now seen corresponding path program 1 times [2023-11-23 22:23:35,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:35,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562576280] [2023-11-23 22:23:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:35,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:35,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:35,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562576280] [2023-11-23 22:23:35,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562576280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:35,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:35,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:23:35,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090771632] [2023-11-23 22:23:35,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:35,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:35,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:35,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:35,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:35,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:35,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:35,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:35,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:35,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:35,788 INFO L124 PetriNetUnfolderBase]: 288/572 cut-off events. [2023-11-23 22:23:35,788 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:23:35,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 572 events. 288/572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3048 event pairs, 118 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1045. Up to 241 conditions per place. [2023-11-23 22:23:35,807 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-11-23 22:23:35,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 150 flow [2023-11-23 22:23:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2023-11-23 22:23:35,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2023-11-23 22:23:35,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2023-11-23 22:23:35,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2023-11-23 22:23:35,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:35,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2023-11-23 22:23:35,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:35,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:35,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:35,873 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 73 transitions. [2023-11-23 22:23:35,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 150 flow [2023-11-23 22:23:35,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:35,880 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2023-11-23 22:23:35,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-23 22:23:35,890 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-23 22:23:35,891 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2023-11-23 22:23:35,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:35,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:35,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 22:23:35,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:23:35,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:35,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash 223253782, now seen corresponding path program 1 times [2023-11-23 22:23:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:35,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382997267] [2023-11-23 22:23:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:35,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:36,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:36,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382997267] [2023-11-23 22:23:36,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382997267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:36,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:36,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:23:36,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850788369] [2023-11-23 22:23:36,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:36,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:36,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:36,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:36,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:36,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:36,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:36,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:36,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:36,191 INFO L124 PetriNetUnfolderBase]: 279/583 cut-off events. [2023-11-23 22:23:36,191 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-23 22:23:36,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 583 events. 279/583 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3039 event pairs, 102 based on Foata normal form. 16/530 useless extension candidates. Maximal degree in co-relation 1151. Up to 266 conditions per place. [2023-11-23 22:23:36,198 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-23 22:23:36,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 174 flow [2023-11-23 22:23:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-23 22:23:36,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-23 22:23:36,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-23 22:23:36,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-23 22:23:36,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:36,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-23 22:23:36,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,213 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 72 transitions. [2023-11-23 22:23:36,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 174 flow [2023-11-23 22:23:36,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:36,222 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2023-11-23 22:23:36,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-23 22:23:36,224 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-11-23 22:23:36,225 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2023-11-23 22:23:36,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:36,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:36,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:23:36,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:36,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:36,233 INFO L85 PathProgramCache]: Analyzing trace with hash -201472424, now seen corresponding path program 1 times [2023-11-23 22:23:36,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:36,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235927863] [2023-11-23 22:23:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:36,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:36,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:36,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235927863] [2023-11-23 22:23:36,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235927863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:36,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:36,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:23:36,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282733994] [2023-11-23 22:23:36,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:36,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:23:36,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:36,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:23:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:23:36,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-23 22:23:36,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:36,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-23 22:23:36,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:36,838 INFO L124 PetriNetUnfolderBase]: 661/1319 cut-off events. [2023-11-23 22:23:36,838 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2023-11-23 22:23:36,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1319 events. 661/1319 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8393 event pairs, 376 based on Foata normal form. 64/1222 useless extension candidates. Maximal degree in co-relation 2731. Up to 721 conditions per place. [2023-11-23 22:23:36,853 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 50 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-23 22:23:36,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 302 flow [2023-11-23 22:23:36,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:23:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:23:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2023-11-23 22:23:36,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2023-11-23 22:23:36,859 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 93 transitions. [2023-11-23 22:23:36,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 93 transitions. [2023-11-23 22:23:36,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:36,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 93 transitions. [2023-11-23 22:23:36,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,863 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,864 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 93 transitions. [2023-11-23 22:23:36,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 302 flow [2023-11-23 22:23:36,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:23:36,870 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2023-11-23 22:23:36,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-11-23 22:23:36,873 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-11-23 22:23:36,873 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2023-11-23 22:23:36,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:36,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:36,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:23:36,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:36,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:36,876 INFO L85 PathProgramCache]: Analyzing trace with hash -205369086, now seen corresponding path program 1 times [2023-11-23 22:23:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:36,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59035370] [2023-11-23 22:23:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:36,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:37,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:37,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59035370] [2023-11-23 22:23:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59035370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:37,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:37,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:23:37,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980946130] [2023-11-23 22:23:37,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:37,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:37,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:37,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:37,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:37,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:37,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:37,212 INFO L124 PetriNetUnfolderBase]: 439/1042 cut-off events. [2023-11-23 22:23:37,213 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2023-11-23 22:23:37,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1042 events. 439/1042 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6809 event pairs, 151 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 2326. Up to 459 conditions per place. [2023-11-23 22:23:37,226 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-11-23 22:23:37,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 267 flow [2023-11-23 22:23:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-23 22:23:37,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.78125 [2023-11-23 22:23:37,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-23 22:23:37,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-23 22:23:37,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:37,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-23 22:23:37,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,236 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 75 transitions. [2023-11-23 22:23:37,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 267 flow [2023-11-23 22:23:37,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:23:37,244 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2023-11-23 22:23:37,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-11-23 22:23:37,247 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-11-23 22:23:37,247 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2023-11-23 22:23:37,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:37,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:37,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:23:37,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:37,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:37,249 INFO L85 PathProgramCache]: Analyzing trace with hash -205369085, now seen corresponding path program 1 times [2023-11-23 22:23:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:37,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910911300] [2023-11-23 22:23:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:37,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:37,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:37,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910911300] [2023-11-23 22:23:37,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910911300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:37,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:37,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:23:37,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393779365] [2023-11-23 22:23:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:37,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:37,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:37,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:37,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:37,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:37,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:37,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:37,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:37,518 INFO L124 PetriNetUnfolderBase]: 417/1032 cut-off events. [2023-11-23 22:23:37,519 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2023-11-23 22:23:37,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 1032 events. 417/1032 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6807 event pairs, 117 based on Foata normal form. 24/1015 useless extension candidates. Maximal degree in co-relation 2454. Up to 483 conditions per place. [2023-11-23 22:23:37,532 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-23 22:23:37,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 290 flow [2023-11-23 22:23:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2023-11-23 22:23:37,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2023-11-23 22:23:37,535 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 74 transitions. [2023-11-23 22:23:37,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 74 transitions. [2023-11-23 22:23:37,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:37,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 74 transitions. [2023-11-23 22:23:37,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,539 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 74 transitions. [2023-11-23 22:23:37,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 290 flow [2023-11-23 22:23:37,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:37,546 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2023-11-23 22:23:37,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-23 22:23:37,550 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-11-23 22:23:37,551 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2023-11-23 22:23:37,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:37,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:37,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:23:37,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:37,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:37,554 INFO L85 PathProgramCache]: Analyzing trace with hash 208813157, now seen corresponding path program 1 times [2023-11-23 22:23:37,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:37,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696917278] [2023-11-23 22:23:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:37,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:37,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:37,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696917278] [2023-11-23 22:23:37,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696917278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:37,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:37,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:23:37,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665503148] [2023-11-23 22:23:37,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:37,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:23:37,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:37,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:23:37,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:23:37,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-23 22:23:37,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:37,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-23 22:23:37,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:37,929 INFO L124 PetriNetUnfolderBase]: 661/1351 cut-off events. [2023-11-23 22:23:37,930 INFO L125 PetriNetUnfolderBase]: For 1041/1157 co-relation queries the response was YES. [2023-11-23 22:23:37,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 1351 events. 661/1351 cut-off events. For 1041/1157 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8864 event pairs, 292 based on Foata normal form. 87/1388 useless extension candidates. Maximal degree in co-relation 3357. Up to 853 conditions per place. [2023-11-23 22:23:37,949 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 51 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-23 22:23:37,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 376 flow [2023-11-23 22:23:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:23:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:23:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2023-11-23 22:23:37,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2023-11-23 22:23:37,951 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 89 transitions. [2023-11-23 22:23:37,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 89 transitions. [2023-11-23 22:23:37,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:37,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 89 transitions. [2023-11-23 22:23:37,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,954 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,955 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 89 transitions. [2023-11-23 22:23:37,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 376 flow [2023-11-23 22:23:37,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:23:37,960 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2023-11-23 22:23:37,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-23 22:23:37,965 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-11-23 22:23:37,965 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2023-11-23 22:23:37,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:37,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:37,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:23:37,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:37,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1172991260, now seen corresponding path program 1 times [2023-11-23 22:23:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607690286] [2023-11-23 22:23:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:38,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:38,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607690286] [2023-11-23 22:23:38,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607690286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:38,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:38,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:23:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866906501] [2023-11-23 22:23:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:38,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:23:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:23:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:23:38,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:38,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:38,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:38,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:38,374 INFO L124 PetriNetUnfolderBase]: 553/1324 cut-off events. [2023-11-23 22:23:38,375 INFO L125 PetriNetUnfolderBase]: For 1098/1179 co-relation queries the response was YES. [2023-11-23 22:23:38,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 1324 events. 553/1324 cut-off events. For 1098/1179 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9383 event pairs, 147 based on Foata normal form. 75/1348 useless extension candidates. Maximal degree in co-relation 3466. Up to 422 conditions per place. [2023-11-23 22:23:38,392 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 51 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-11-23 22:23:38,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 435 flow [2023-11-23 22:23:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:23:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:23:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-23 22:23:38,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.74375 [2023-11-23 22:23:38,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-23 22:23:38,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-23 22:23:38,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:38,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-23 22:23:38,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 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) [2023-11-23 22:23:38,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 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) [2023-11-23 22:23:38,399 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 119 transitions. [2023-11-23 22:23:38,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 435 flow [2023-11-23 22:23:38,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:23:38,406 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 258 flow [2023-11-23 22:23:38,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-23 22:23:38,409 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-11-23 22:23:38,409 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 258 flow [2023-11-23 22:23:38,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:38,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:38,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:23:38,410 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:38,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1191038841, now seen corresponding path program 1 times [2023-11-23 22:23:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234670143] [2023-11-23 22:23:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:38,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:38,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:38,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234670143] [2023-11-23 22:23:38,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234670143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:38,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:38,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:23:38,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840474019] [2023-11-23 22:23:38,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:38,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:23:38,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:23:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:23:38,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:38,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:38,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:38,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:38,821 INFO L124 PetriNetUnfolderBase]: 608/1490 cut-off events. [2023-11-23 22:23:38,822 INFO L125 PetriNetUnfolderBase]: For 1762/1878 co-relation queries the response was YES. [2023-11-23 22:23:38,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 1490 events. 608/1490 cut-off events. For 1762/1878 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10785 event pairs, 81 based on Foata normal form. 69/1523 useless extension candidates. Maximal degree in co-relation 4048. Up to 509 conditions per place. [2023-11-23 22:23:38,838 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 55 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-11-23 22:23:38,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 545 flow [2023-11-23 22:23:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:23:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:23:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2023-11-23 22:23:38,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725 [2023-11-23 22:23:38,841 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 116 transitions. [2023-11-23 22:23:38,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 116 transitions. [2023-11-23 22:23:38,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:38,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 116 transitions. [2023-11-23 22:23:38,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 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) [2023-11-23 22:23:38,843 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 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) [2023-11-23 22:23:38,843 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 258 flow. Second operand 5 states and 116 transitions. [2023-11-23 22:23:38,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 545 flow [2023-11-23 22:23:38,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 543 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-23 22:23:38,855 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 328 flow [2023-11-23 22:23:38,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-11-23 22:23:38,859 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-11-23 22:23:38,860 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 328 flow [2023-11-23 22:23:38,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:38,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:38,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:23:38,861 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:38,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1865249180, now seen corresponding path program 1 times [2023-11-23 22:23:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:38,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915026157] [2023-11-23 22:23:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:38,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:38,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915026157] [2023-11-23 22:23:38,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915026157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:38,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:38,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:23:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063073892] [2023-11-23 22:23:38,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:38,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:23:38,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:38,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:23:38,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:23:38,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:38,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:38,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:38,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:39,159 INFO L124 PetriNetUnfolderBase]: 503/1205 cut-off events. [2023-11-23 22:23:39,159 INFO L125 PetriNetUnfolderBase]: For 2149/2256 co-relation queries the response was YES. [2023-11-23 22:23:39,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 1205 events. 503/1205 cut-off events. For 2149/2256 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8108 event pairs, 378 based on Foata normal form. 84/1229 useless extension candidates. Maximal degree in co-relation 3375. Up to 846 conditions per place. [2023-11-23 22:23:39,174 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 30 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-23 22:23:39,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 45 transitions, 319 flow [2023-11-23 22:23:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2023-11-23 22:23:39,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-23 22:23:39,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 60 transitions. [2023-11-23 22:23:39,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 60 transitions. [2023-11-23 22:23:39,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:39,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 60 transitions. [2023-11-23 22:23:39,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,179 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 328 flow. Second operand 3 states and 60 transitions. [2023-11-23 22:23:39,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 45 transitions, 319 flow [2023-11-23 22:23:39,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 304 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-23 22:23:39,187 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 244 flow [2023-11-23 22:23:39,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-11-23 22:23:39,189 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-11-23 22:23:39,189 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 244 flow [2023-11-23 22:23:39,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:39,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:39,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:23:39,191 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:39,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1191045681, now seen corresponding path program 1 times [2023-11-23 22:23:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:39,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655825650] [2023-11-23 22:23:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:39,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:39,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:39,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655825650] [2023-11-23 22:23:39,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655825650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:39,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:39,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:23:39,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123556540] [2023-11-23 22:23:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:39,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:23:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:39,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:23:39,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:23:39,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:39,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:39,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:39,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:39,583 INFO L124 PetriNetUnfolderBase]: 558/1374 cut-off events. [2023-11-23 22:23:39,583 INFO L125 PetriNetUnfolderBase]: For 1496/1607 co-relation queries the response was YES. [2023-11-23 22:23:39,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 1374 events. 558/1374 cut-off events. For 1496/1607 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9446 event pairs, 119 based on Foata normal form. 66/1395 useless extension candidates. Maximal degree in co-relation 3646. Up to 674 conditions per place. [2023-11-23 22:23:39,600 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 50 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2023-11-23 22:23:39,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 444 flow [2023-11-23 22:23:39,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:23:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:23:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2023-11-23 22:23:39,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.69375 [2023-11-23 22:23:39,602 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 111 transitions. [2023-11-23 22:23:39,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 111 transitions. [2023-11-23 22:23:39,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:39,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 111 transitions. [2023-11-23 22:23:39,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 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) [2023-11-23 22:23:39,605 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 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) [2023-11-23 22:23:39,605 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 244 flow. Second operand 5 states and 111 transitions. [2023-11-23 22:23:39,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 444 flow [2023-11-23 22:23:39,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:23:39,612 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 269 flow [2023-11-23 22:23:39,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-11-23 22:23:39,613 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-23 22:23:39,614 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 269 flow [2023-11-23 22:23:39,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:39,614 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:39,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:23:39,615 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:39,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:39,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2045990776, now seen corresponding path program 1 times [2023-11-23 22:23:39,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:39,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915314628] [2023-11-23 22:23:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:39,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:39,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:39,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915314628] [2023-11-23 22:23:39,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915314628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:39,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568168136] [2023-11-23 22:23:39,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:39,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:39,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:39,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:39,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:23:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:39,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:23:39,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:39,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:23:39,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568168136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:39,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:23:39,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-23 22:23:39,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634410783] [2023-11-23 22:23:39,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:39,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:23:39,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:39,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:23:39,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:23:39,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-23 22:23:39,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:39,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-23 22:23:39,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:40,449 INFO L124 PetriNetUnfolderBase]: 851/1803 cut-off events. [2023-11-23 22:23:40,450 INFO L125 PetriNetUnfolderBase]: For 2364/2520 co-relation queries the response was YES. [2023-11-23 22:23:40,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5077 conditions, 1803 events. 851/1803 cut-off events. For 2364/2520 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12205 event pairs, 69 based on Foata normal form. 121/1846 useless extension candidates. Maximal degree in co-relation 5050. Up to 572 conditions per place. [2023-11-23 22:23:40,480 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2023-11-23 22:23:40,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 96 transitions, 700 flow [2023-11-23 22:23:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:23:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:23:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2023-11-23 22:23:40,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2023-11-23 22:23:40,482 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 124 transitions. [2023-11-23 22:23:40,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 124 transitions. [2023-11-23 22:23:40,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:40,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 124 transitions. [2023-11-23 22:23:40,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,485 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,485 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 269 flow. Second operand 6 states and 124 transitions. [2023-11-23 22:23:40,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 96 transitions, 700 flow [2023-11-23 22:23:40,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 678 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:40,498 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 267 flow [2023-11-23 22:23:40,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2023-11-23 22:23:40,500 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2023-11-23 22:23:40,500 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 267 flow [2023-11-23 22:23:40,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:40,501 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 22:23:40,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:40,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:40,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:40,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash 998795634, now seen corresponding path program 1 times [2023-11-23 22:23:40,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:40,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889022679] [2023-11-23 22:23:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:40,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:23:40,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:40,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889022679] [2023-11-23 22:23:40,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889022679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:40,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:40,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:23:40,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237579583] [2023-11-23 22:23:40,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:40,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:23:40,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:23:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:23:40,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-23 22:23:40,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:40,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-23 22:23:40,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:41,120 INFO L124 PetriNetUnfolderBase]: 883/1815 cut-off events. [2023-11-23 22:23:41,120 INFO L125 PetriNetUnfolderBase]: For 2603/2696 co-relation queries the response was YES. [2023-11-23 22:23:41,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 1815 events. 883/1815 cut-off events. For 2603/2696 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12013 event pairs, 175 based on Foata normal form. 113/1897 useless extension candidates. Maximal degree in co-relation 5372. Up to 726 conditions per place. [2023-11-23 22:23:41,141 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-11-23 22:23:41,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 534 flow [2023-11-23 22:23:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:23:41,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:23:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2023-11-23 22:23:41,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2023-11-23 22:23:41,142 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 78 transitions. [2023-11-23 22:23:41,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 78 transitions. [2023-11-23 22:23:41,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:41,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 78 transitions. [2023-11-23 22:23:41,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,144 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,144 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 267 flow. Second operand 4 states and 78 transitions. [2023-11-23 22:23:41,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 534 flow [2023-11-23 22:23:41,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 518 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-23 22:23:41,155 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 267 flow [2023-11-23 22:23:41,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-11-23 22:23:41,156 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-23 22:23:41,156 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 267 flow [2023-11-23 22:23:41,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:41,157 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:41,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 22:23:41,157 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:41,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:41,158 INFO L85 PathProgramCache]: Analyzing trace with hash 146874342, now seen corresponding path program 1 times [2023-11-23 22:23:41,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:41,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529852831] [2023-11-23 22:23:41,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:41,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:41,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529852831] [2023-11-23 22:23:41,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529852831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340363476] [2023-11-23 22:23:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:41,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:41,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:41,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:23:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:41,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:23:41,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:41,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:23:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340363476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:41,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:23:41,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-23 22:23:41,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170327239] [2023-11-23 22:23:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:41,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:23:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:23:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:23:41,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-23 22:23:41,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:41,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-23 22:23:41,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:41,833 INFO L124 PetriNetUnfolderBase]: 1026/1892 cut-off events. [2023-11-23 22:23:41,834 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2023-11-23 22:23:41,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 1892 events. 1026/1892 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11856 event pairs, 153 based on Foata normal form. 69/1875 useless extension candidates. Maximal degree in co-relation 5727. Up to 765 conditions per place. [2023-11-23 22:23:41,852 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 52 selfloop transitions, 6 changer transitions 1/67 dead transitions. [2023-11-23 22:23:41,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 524 flow [2023-11-23 22:23:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:23:41,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:23:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2023-11-23 22:23:41,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2023-11-23 22:23:41,854 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2023-11-23 22:23:41,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2023-11-23 22:23:41,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:41,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2023-11-23 22:23:41,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,856 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,856 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 267 flow. Second operand 4 states and 74 transitions. [2023-11-23 22:23:41,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 524 flow [2023-11-23 22:23:41,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:41,866 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 267 flow [2023-11-23 22:23:41,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2023-11-23 22:23:41,867 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-23 22:23:41,867 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 267 flow [2023-11-23 22:23:41,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:41,868 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:41,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:42,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 22:23:42,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:42,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1612175747, now seen corresponding path program 1 times [2023-11-23 22:23:42,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:42,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326414345] [2023-11-23 22:23:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:42,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:42,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326414345] [2023-11-23 22:23:42,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326414345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756186579] [2023-11-23 22:23:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:42,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:42,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:42,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:42,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:23:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:42,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:23:42,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:42,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:23:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:42,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756186579] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:23:42,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:23:42,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-23 22:23:42,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370107558] [2023-11-23 22:23:42,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:23:42,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:23:42,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:42,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:23:42,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:23:42,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:42,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:42,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:42,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:42,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:42,831 INFO L124 PetriNetUnfolderBase]: 747/1709 cut-off events. [2023-11-23 22:23:42,832 INFO L125 PetriNetUnfolderBase]: For 3499/3544 co-relation queries the response was YES. [2023-11-23 22:23:42,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 1709 events. 747/1709 cut-off events. For 3499/3544 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10738 event pairs, 71 based on Foata normal form. 132/1816 useless extension candidates. Maximal degree in co-relation 5068. Up to 289 conditions per place. [2023-11-23 22:23:42,851 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 61 selfloop transitions, 12 changer transitions 4/89 dead transitions. [2023-11-23 22:23:42,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 89 transitions, 643 flow [2023-11-23 22:23:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:23:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:23:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2023-11-23 22:23:42,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-23 22:23:42,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 160 transitions. [2023-11-23 22:23:42,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 160 transitions. [2023-11-23 22:23:42,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:42,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 160 transitions. [2023-11-23 22:23:42,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:42,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:42,857 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:42,857 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 267 flow. Second operand 7 states and 160 transitions. [2023-11-23 22:23:42,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 89 transitions, 643 flow [2023-11-23 22:23:42,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 611 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-23 22:23:42,870 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 371 flow [2023-11-23 22:23:42,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-11-23 22:23:42,871 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 36 predicate places. [2023-11-23 22:23:42,872 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 371 flow [2023-11-23 22:23:42,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:42,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:42,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:42,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:43,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 22:23:43,096 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:43,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:43,097 INFO L85 PathProgramCache]: Analyzing trace with hash 258137567, now seen corresponding path program 1 times [2023-11-23 22:23:43,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:43,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360802353] [2023-11-23 22:23:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:43,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:23:43,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:43,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360802353] [2023-11-23 22:23:43,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360802353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:43,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:43,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:23:43,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841752720] [2023-11-23 22:23:43,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:43,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:23:43,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:43,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:23:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:23:43,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-23 22:23:43,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:43,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:43,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-23 22:23:43,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:43,705 INFO L124 PetriNetUnfolderBase]: 1190/2257 cut-off events. [2023-11-23 22:23:43,705 INFO L125 PetriNetUnfolderBase]: For 5438/5438 co-relation queries the response was YES. [2023-11-23 22:23:43,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 2257 events. 1190/2257 cut-off events. For 5438/5438 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13425 event pairs, 275 based on Foata normal form. 0/2223 useless extension candidates. Maximal degree in co-relation 7254. Up to 893 conditions per place. [2023-11-23 22:23:43,725 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-23 22:23:43,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 732 flow [2023-11-23 22:23:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:23:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:23:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2023-11-23 22:23:43,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2023-11-23 22:23:43,727 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2023-11-23 22:23:43,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2023-11-23 22:23:43,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:43,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2023-11-23 22:23:43,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:43,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:43,729 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:43,730 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 371 flow. Second operand 4 states and 74 transitions. [2023-11-23 22:23:43,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 732 flow [2023-11-23 22:23:43,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 701 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:43,744 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 368 flow [2023-11-23 22:23:43,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2023-11-23 22:23:43,746 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2023-11-23 22:23:43,747 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 368 flow [2023-11-23 22:23:43,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:43,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:43,747 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:43,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 22:23:43,748 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:43,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:43,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1371124197, now seen corresponding path program 1 times [2023-11-23 22:23:43,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:43,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769437579] [2023-11-23 22:23:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:43,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:43,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:43,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769437579] [2023-11-23 22:23:43,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769437579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:43,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184769983] [2023-11-23 22:23:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:43,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:43,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:43,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:43,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:23:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:43,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:23:43,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:44,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:23:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:44,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184769983] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:23:44,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:23:44,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-23 22:23:44,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417854183] [2023-11-23 22:23:44,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:23:44,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 22:23:44,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:44,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 22:23:44,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:23:44,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:44,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 368 flow. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:44,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:44,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:44,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:44,810 INFO L124 PetriNetUnfolderBase]: 972/2188 cut-off events. [2023-11-23 22:23:44,810 INFO L125 PetriNetUnfolderBase]: For 7406/7424 co-relation queries the response was YES. [2023-11-23 22:23:44,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7022 conditions, 2188 events. 972/2188 cut-off events. For 7406/7424 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12998 event pairs, 35 based on Foata normal form. 120/2299 useless extension candidates. Maximal degree in co-relation 6991. Up to 262 conditions per place. [2023-11-23 22:23:44,828 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 78 selfloop transitions, 17 changer transitions 17/124 dead transitions. [2023-11-23 22:23:44,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 947 flow [2023-11-23 22:23:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 22:23:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-23 22:23:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 270 transitions. [2023-11-23 22:23:44,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.703125 [2023-11-23 22:23:44,831 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 270 transitions. [2023-11-23 22:23:44,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 270 transitions. [2023-11-23 22:23:44,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:44,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 270 transitions. [2023-11-23 22:23:44,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 22.5) internal successors, (270), 12 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:44,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:44,835 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:44,836 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 368 flow. Second operand 12 states and 270 transitions. [2023-11-23 22:23:44,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 947 flow [2023-11-23 22:23:44,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 124 transitions, 910 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:44,852 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 427 flow [2023-11-23 22:23:44,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=427, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2023-11-23 22:23:44,853 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2023-11-23 22:23:44,853 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 427 flow [2023-11-23 22:23:44,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:44,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:44,854 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:44,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:45,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 22:23:45,070 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:45,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:45,070 INFO L85 PathProgramCache]: Analyzing trace with hash 19604967, now seen corresponding path program 1 times [2023-11-23 22:23:45,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:45,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580086304] [2023-11-23 22:23:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:45,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:45,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:45,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580086304] [2023-11-23 22:23:45,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580086304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:45,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032807482] [2023-11-23 22:23:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:45,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:45,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:45,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:45,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:23:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:45,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:23:45,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:45,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:23:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:45,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032807482] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:23:45,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:23:45,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-23 22:23:45,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785398458] [2023-11-23 22:23:45,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:23:45,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 22:23:45,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 22:23:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-23 22:23:45,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:45,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 427 flow. Second operand has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:45,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:45,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:45,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:46,609 INFO L124 PetriNetUnfolderBase]: 1422/3158 cut-off events. [2023-11-23 22:23:46,610 INFO L125 PetriNetUnfolderBase]: For 11400/11418 co-relation queries the response was YES. [2023-11-23 22:23:46,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 3158 events. 1422/3158 cut-off events. For 11400/11418 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 18950 event pairs, 71 based on Foata normal form. 108/3247 useless extension candidates. Maximal degree in co-relation 10090. Up to 406 conditions per place. [2023-11-23 22:23:46,641 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 24 changer transitions 25/153 dead transitions. [2023-11-23 22:23:46,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 153 transitions, 1220 flow [2023-11-23 22:23:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 22:23:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-23 22:23:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 336 transitions. [2023-11-23 22:23:46,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-23 22:23:46,644 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 336 transitions. [2023-11-23 22:23:46,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 336 transitions. [2023-11-23 22:23:46,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:46,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 336 transitions. [2023-11-23 22:23:46,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 22.4) internal successors, (336), 15 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) [2023-11-23 22:23:46,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 32.0) internal successors, (512), 16 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:46,648 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 32.0) internal successors, (512), 16 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:46,649 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 427 flow. Second operand 15 states and 336 transitions. [2023-11-23 22:23:46,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 153 transitions, 1220 flow [2023-11-23 22:23:46,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 153 transitions, 1207 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-23 22:23:46,675 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 578 flow [2023-11-23 22:23:46,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=578, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2023-11-23 22:23:46,676 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2023-11-23 22:23:46,676 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 578 flow [2023-11-23 22:23:46,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:46,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:46,677 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:46,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:46,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 22:23:46,902 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:46,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 117045895, now seen corresponding path program 2 times [2023-11-23 22:23:46,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:46,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534574981] [2023-11-23 22:23:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:46,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:47,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:47,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534574981] [2023-11-23 22:23:47,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534574981] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:47,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111375089] [2023-11-23 22:23:47,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:23:47,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:47,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:47,332 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:47,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:23:47,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 22:23:47,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:23:47,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 22:23:47,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:47,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:23:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:47,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111375089] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:23:47,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:23:47,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-11-23 22:23:47,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015550021] [2023-11-23 22:23:47,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:23:47,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 22:23:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 22:23:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-11-23 22:23:47,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-23 22:23:47,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 578 flow. Second operand has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:47,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:47,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-23 22:23:47,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:49,835 INFO L124 PetriNetUnfolderBase]: 2412/5356 cut-off events. [2023-11-23 22:23:49,835 INFO L125 PetriNetUnfolderBase]: For 28138/28156 co-relation queries the response was YES. [2023-11-23 22:23:49,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17417 conditions, 5356 events. 2412/5356 cut-off events. For 28138/28156 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 31875 event pairs, 35 based on Foata normal form. 216/5563 useless extension candidates. Maximal degree in co-relation 17370. Up to 694 conditions per place. [2023-11-23 22:23:49,888 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 158 selfloop transitions, 41 changer transitions 49/260 dead transitions. [2023-11-23 22:23:49,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 260 transitions, 2118 flow [2023-11-23 22:23:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-23 22:23:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-23 22:23:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 627 transitions. [2023-11-23 22:23:49,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6997767857142857 [2023-11-23 22:23:49,892 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 627 transitions. [2023-11-23 22:23:49,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 627 transitions. [2023-11-23 22:23:49,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:49,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 627 transitions. [2023-11-23 22:23:49,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 22.392857142857142) internal successors, (627), 28 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:49,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 32.0) internal successors, (928), 29 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:49,898 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 32.0) internal successors, (928), 29 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:49,899 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 578 flow. Second operand 28 states and 627 transitions. [2023-11-23 22:23:49,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 260 transitions, 2118 flow [2023-11-23 22:23:49,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 260 transitions, 2038 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-23 22:23:49,960 INFO L231 Difference]: Finished difference. Result has 139 places, 76 transitions, 840 flow [2023-11-23 22:23:49,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=840, PETRI_PLACES=139, PETRI_TRANSITIONS=76} [2023-11-23 22:23:49,961 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2023-11-23 22:23:49,961 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 76 transitions, 840 flow [2023-11-23 22:23:49,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:49,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:49,962 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:49,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:50,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 22:23:50,178 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-23 22:23:50,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash -940623473, now seen corresponding path program 2 times [2023-11-23 22:23:50,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:50,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837850968] [2023-11-23 22:23:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:50,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:50,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:50,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837850968] [2023-11-23 22:23:50,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837850968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:50,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906040206] [2023-11-23 22:23:50,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:23:50,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:50,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:50,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:50,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:23:51,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 22:23:51,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:23:51,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 22:23:51,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 22:23:51,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:23:51,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906040206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:51,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:23:51,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 46 [2023-11-23 22:23:51,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007338820] [2023-11-23 22:23:51,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:51,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 22:23:51,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:51,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 22:23:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1760, Unknown=0, NotChecked=0, Total=2070 [2023-11-23 22:23:51,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-23 22:23:51,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 76 transitions, 840 flow. Second operand has 23 states, 23 states have (on average 13.130434782608695) internal successors, (302), 23 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:51,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:51,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-23 22:23:51,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:58,575 INFO L124 PetriNetUnfolderBase]: 15078/26727 cut-off events. [2023-11-23 22:23:58,575 INFO L125 PetriNetUnfolderBase]: For 69209/69497 co-relation queries the response was YES. [2023-11-23 22:23:58,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88589 conditions, 26727 events. 15078/26727 cut-off events. For 69209/69497 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 203749 event pairs, 265 based on Foata normal form. 656/27373 useless extension candidates. Maximal degree in co-relation 88539. Up to 3015 conditions per place. [2023-11-23 22:23:58,795 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 591/591 dead transitions. [2023-11-23 22:23:58,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 591 transitions, 6844 flow [2023-11-23 22:23:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 22:23:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-23 22:23:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 460 transitions. [2023-11-23 22:23:58,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-23 22:23:58,799 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 460 transitions. [2023-11-23 22:23:58,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 460 transitions. [2023-11-23 22:23:58,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:58,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 460 transitions. [2023-11-23 22:23:58,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 20.0) internal successors, (460), 23 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:58,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 32.0) internal successors, (768), 24 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:58,810 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 32.0) internal successors, (768), 24 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:58,811 INFO L175 Difference]: Start difference. First operand has 139 places, 76 transitions, 840 flow. Second operand 23 states and 460 transitions. [2023-11-23 22:23:58,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 591 transitions, 6844 flow [2023-11-23 22:23:59,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 591 transitions, 5013 flow, removed 22 selfloop flow, removed 48 redundant places. [2023-11-23 22:23:59,233 INFO L231 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2023-11-23 22:23:59,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2023-11-23 22:23:59,234 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 73 predicate places. [2023-11-23 22:23:59,234 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2023-11-23 22:23:59,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.130434782608695) internal successors, (302), 23 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:59,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-23 22:23:59,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-11-23 22:23:59,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-23 22:23:59,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-23 22:23:59,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-23 22:23:59,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-23 22:23:59,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-23 22:23:59,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-23 22:23:59,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-23 22:23:59,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-23 22:23:59,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-23 22:23:59,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-23 22:23:59,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-23 22:23:59,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-23 22:23:59,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-23 22:23:59,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-23 22:23:59,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-23 22:23:59,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-23 22:23:59,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:59,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:59,458 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:59,463 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:23:59,463 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:23:59,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:23:59 BasicIcfg [2023-11-23 22:23:59,468 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:23:59,468 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:23:59,468 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:23:59,468 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:23:59,469 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:23:34" (3/4) ... [2023-11-23 22:23:59,471 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:23:59,474 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-23 22:23:59,474 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-23 22:23:59,481 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2023-11-23 22:23:59,482 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-23 22:23:59,482 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 22:23:59,483 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 22:23:59,580 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:23:59,581 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:23:59,581 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:23:59,582 INFO L158 Benchmark]: Toolchain (without parser) took 26138.72ms. Allocated memory was 123.7MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 92.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 448.6MB. Max. memory is 16.1GB. [2023-11-23 22:23:59,582 INFO L158 Benchmark]: CDTParser took 1.18ms. Allocated memory is still 100.7MB. Free memory was 55.7MB in the beginning and 55.6MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:23:59,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 621.96ms. Allocated memory is still 123.7MB. Free memory was 92.9MB in the beginning and 73.1MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 22:23:59,583 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.96ms. Allocated memory is still 123.7MB. Free memory was 73.1MB in the beginning and 71.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:23:59,583 INFO L158 Benchmark]: Boogie Preprocessor took 64.81ms. Allocated memory is still 123.7MB. Free memory was 71.5MB in the beginning and 69.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:23:59,583 INFO L158 Benchmark]: RCFGBuilder took 736.66ms. Allocated memory is still 123.7MB. Free memory was 68.9MB in the beginning and 95.4MB in the end (delta: -26.5MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-11-23 22:23:59,584 INFO L158 Benchmark]: TraceAbstraction took 24547.79ms. Allocated memory was 123.7MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 94.8MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 466.0MB. Max. memory is 16.1GB. [2023-11-23 22:23:59,584 INFO L158 Benchmark]: Witness Printer took 112.83ms. Allocated memory is still 1.9GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:23:59,591 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18ms. Allocated memory is still 100.7MB. Free memory was 55.7MB in the beginning and 55.6MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 621.96ms. Allocated memory is still 123.7MB. Free memory was 92.9MB in the beginning and 73.1MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.96ms. Allocated memory is still 123.7MB. Free memory was 73.1MB in the beginning and 71.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.81ms. Allocated memory is still 123.7MB. Free memory was 71.5MB in the beginning and 69.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 736.66ms. Allocated memory is still 123.7MB. Free memory was 68.9MB in the beginning and 95.4MB in the end (delta: -26.5MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * TraceAbstraction took 24547.79ms. Allocated memory was 123.7MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 94.8MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 466.0MB. Max. memory is 16.1GB. * Witness Printer took 112.83ms. Allocated memory is still 1.9GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: 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, 55 locations, 18 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: 24.4s, OverallIterations: 19, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1896 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1822 mSDsluCounter, 171 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3078 IncrementalHoareTripleChecker+Invalid, 3132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 38 mSDtfsCounter, 3078 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 569 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=840occurred in iteration=18, InterpolantAutomatonStates: 141, 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, 0.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 780 ConstructedInterpolants, 0 QuantifiedInterpolants, 2240 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1178 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 560/1680 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 22:23:59,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02c469f-ade3-4e48-801b-a7a16c74564b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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