./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --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 dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:33:43,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:33:43,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:33:43,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:33:43,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:33:43,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:33:43,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:33:43,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:33:43,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:33:43,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:33:43,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:33:43,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:33:43,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:33:43,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:33:43,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:33:43,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:33:43,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:33:43,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:33:43,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:33:43,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:33:43,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:33:43,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:33:43,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:33:43,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:33:43,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:33:43,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:33:43,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:33:43,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:33:43,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:33:43,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:33:43,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:33:43,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:33:43,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:33:43,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:33:43,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:33:43,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:33:43,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:33:43,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:33:43,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:33:43,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:33:43,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:33:43,364 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:33:43,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:33:43,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:33:43,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:33:43,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:33:43,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:33:43,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:33:43,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:33:43,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:33:43,422 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:33:43,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:33:43,423 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:33:43,424 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:33:43,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:33:43,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:33:43,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:33:43,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:33:43,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:33:43,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:33:43,426 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:33:43,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:33:43,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:33:43,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:33:43,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:33:43,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:33:43,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:33:43,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:33:43,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:33:43,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:33:43,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:33:43,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:33:43,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:33:43,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:33:43,433 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:33:43,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:33:43,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:33:43,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c [2022-11-16 12:33:43,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:33:43,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:33:43,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:33:43,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:33:43,876 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:33:43,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-11-16 12:33:43,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/data/f0358f6bb/0f778aeae0f144e29b4d19510e6f62bb/FLAG266fed49f [2022-11-16 12:33:44,584 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:33:44,584 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-11-16 12:33:44,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/data/f0358f6bb/0f778aeae0f144e29b4d19510e6f62bb/FLAG266fed49f [2022-11-16 12:33:44,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/data/f0358f6bb/0f778aeae0f144e29b4d19510e6f62bb [2022-11-16 12:33:44,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:33:44,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:33:44,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:33:44,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:33:44,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:33:44,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:33:44" (1/1) ... [2022-11-16 12:33:44,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115dcc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:44, skipping insertion in model container [2022-11-16 12:33:44,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:33:44" (1/1) ... [2022-11-16 12:33:44,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:33:44,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:33:45,235 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-11-16 12:33:45,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:33:45,265 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:33:45,296 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-11-16 12:33:45,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:33:45,318 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:33:45,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45 WrapperNode [2022-11-16 12:33:45,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:33:45,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:33:45,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:33:45,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:33:45,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,375 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 241 [2022-11-16 12:33:45,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:33:45,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:33:45,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:33:45,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:33:45,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,409 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:33:45,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:33:45,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:33:45,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:33:45,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (1/1) ... [2022-11-16 12:33:45,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:33:45,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:33:45,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:33:45,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:33:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:33:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:33:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:33:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:33:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:33:45,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:33:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:33:45,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:33:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:33:45,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:33:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:33:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:33:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:33:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:33:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:33:45,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:33:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:33:45,527 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:33:45,699 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:33:45,701 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:33:46,158 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:33:46,406 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:33:46,406 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:33:46,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:33:46 BoogieIcfgContainer [2022-11-16 12:33:46,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:33:46,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:33:46,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:33:46,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:33:46,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:33:44" (1/3) ... [2022-11-16 12:33:46,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72312095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:33:46, skipping insertion in model container [2022-11-16 12:33:46,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:33:45" (2/3) ... [2022-11-16 12:33:46,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72312095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:33:46, skipping insertion in model container [2022-11-16 12:33:46,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:33:46" (3/3) ... [2022-11-16 12:33:46,430 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-11-16 12:33:46,441 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:33:46,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:33:46,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 12:33:46,455 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:33:46,582 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:33:46,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 193 transitions, 410 flow [2022-11-16 12:33:46,814 INFO L130 PetriNetUnfolder]: 7/190 cut-off events. [2022-11-16 12:33:46,815 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:33:46,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 190 events. 7/190 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2022-11-16 12:33:46,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 193 transitions, 410 flow [2022-11-16 12:33:46,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 166 transitions, 344 flow [2022-11-16 12:33:46,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:33:46,849 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=LoopsAndPotentialCycles, 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;@286da791, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:33:46,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 12:33:46,881 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-11-16 12:33:46,881 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:33:46,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:33:46,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:46,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:33:46,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:46,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1736731150, now seen corresponding path program 1 times [2022-11-16 12:33:46,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:46,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748342383] [2022-11-16 12:33:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:46,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:47,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:47,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748342383] [2022-11-16 12:33:47,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748342383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:47,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:47,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:33:47,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980008578] [2022-11-16 12:33:47,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:47,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:33:47,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:47,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:33:47,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:33:47,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 193 [2022-11-16 12:33:47,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 166 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:47,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:33:47,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 193 [2022-11-16 12:33:47,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:33:48,607 INFO L130 PetriNetUnfolder]: 847/2137 cut-off events. [2022-11-16 12:33:48,607 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2022-11-16 12:33:48,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3852 conditions, 2137 events. 847/2137 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 15317 event pairs, 846 based on Foata normal form. 6/1946 useless extension candidates. Maximal degree in co-relation 1787. Up to 716 conditions per place. [2022-11-16 12:33:48,633 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 54 selfloop transitions, 4 changer transitions 4/188 dead transitions. [2022-11-16 12:33:48,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 188 transitions, 516 flow [2022-11-16 12:33:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:33:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:33:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 833 transitions. [2022-11-16 12:33:48,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8632124352331606 [2022-11-16 12:33:48,655 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 833 transitions. [2022-11-16 12:33:48,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 833 transitions. [2022-11-16 12:33:48,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:33:48,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 833 transitions. [2022-11-16 12:33:48,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:48,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:48,682 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:48,692 INFO L175 Difference]: Start difference. First operand has 170 places, 166 transitions, 344 flow. Second operand 5 states and 833 transitions. [2022-11-16 12:33:48,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 188 transitions, 516 flow [2022-11-16 12:33:48,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 188 transitions, 504 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:33:48,708 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 350 flow [2022-11-16 12:33:48,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2022-11-16 12:33:48,718 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 3 predicate places. [2022-11-16 12:33:48,719 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 350 flow [2022-11-16 12:33:48,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:48,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:33:48,721 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:48,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:33:48,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:33:48,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:48,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1388202806, now seen corresponding path program 1 times [2022-11-16 12:33:48,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:48,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352394535] [2022-11-16 12:33:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:48,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:49,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:49,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352394535] [2022-11-16 12:33:49,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352394535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:33:49,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855772243] [2022-11-16 12:33:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:49,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:33:49,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:33:49,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:33:49,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:33:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:49,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:33:49,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:33:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:49,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:33:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:49,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855772243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:33:49,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:33:49,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:33:49,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528666832] [2022-11-16 12:33:49,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:33:49,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:33:49,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:49,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:33:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:33:49,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 193 [2022-11-16 12:33:49,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 350 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:49,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:33:49,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 193 [2022-11-16 12:33:49,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:33:51,326 INFO L130 PetriNetUnfolder]: 2116/5223 cut-off events. [2022-11-16 12:33:51,327 INFO L131 PetriNetUnfolder]: For 151/151 co-relation queries the response was YES. [2022-11-16 12:33:51,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9378 conditions, 5223 events. 2116/5223 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 42667 event pairs, 2115 based on Foata normal form. 3/4755 useless extension candidates. Maximal degree in co-relation 7440. Up to 711 conditions per place. [2022-11-16 12:33:51,366 INFO L137 encePairwiseOnDemand]: 186/193 looper letters, 123 selfloop transitions, 18 changer transitions 0/267 dead transitions. [2022-11-16 12:33:51,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 267 transitions, 892 flow [2022-11-16 12:33:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:33:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:33:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2898 transitions. [2022-11-16 12:33:51,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8341968911917098 [2022-11-16 12:33:51,380 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2898 transitions. [2022-11-16 12:33:51,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2898 transitions. [2022-11-16 12:33:51,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:33:51,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2898 transitions. [2022-11-16 12:33:51,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 161.0) internal successors, (2898), 18 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:51,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 193.0) internal successors, (3667), 19 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:51,407 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 193.0) internal successors, (3667), 19 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:51,407 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 350 flow. Second operand 18 states and 2898 transitions. [2022-11-16 12:33:51,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 267 transitions, 892 flow [2022-11-16 12:33:51,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 267 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:33:51,419 INFO L231 Difference]: Finished difference. Result has 189 places, 172 transitions, 454 flow [2022-11-16 12:33:51,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=454, PETRI_PLACES=189, PETRI_TRANSITIONS=172} [2022-11-16 12:33:51,420 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 19 predicate places. [2022-11-16 12:33:51,421 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 172 transitions, 454 flow [2022-11-16 12:33:51,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:51,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:33:51,424 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:51,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:33:51,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 12:33:51,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:33:51,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:51,643 INFO L85 PathProgramCache]: Analyzing trace with hash -84613494, now seen corresponding path program 1 times [2022-11-16 12:33:51,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:51,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177051040] [2022-11-16 12:33:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:51,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:51,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:51,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177051040] [2022-11-16 12:33:51,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177051040] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:33:51,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12616031] [2022-11-16 12:33:51,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:51,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:33:51,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:33:51,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:33:51,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:33:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:52,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:33:52,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:33:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:52,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:33:52,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12616031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:52,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:33:52,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:33:52,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715181564] [2022-11-16 12:33:52,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:52,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:33:52,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:52,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:33:52,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:33:52,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 193 [2022-11-16 12:33:52,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 172 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:52,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:33:52,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 193 [2022-11-16 12:33:52,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:33:53,648 INFO L130 PetriNetUnfolder]: 2116/5219 cut-off events. [2022-11-16 12:33:53,648 INFO L131 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2022-11-16 12:33:53,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9396 conditions, 5219 events. 2116/5219 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 42614 event pairs, 2115 based on Foata normal form. 4/4752 useless extension candidates. Maximal degree in co-relation 7505. Up to 2828 conditions per place. [2022-11-16 12:33:53,689 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 55 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2022-11-16 12:33:53,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 192 transitions, 615 flow [2022-11-16 12:33:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:33:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:33:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1129 transitions. [2022-11-16 12:33:53,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8356772760917839 [2022-11-16 12:33:53,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1129 transitions. [2022-11-16 12:33:53,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1129 transitions. [2022-11-16 12:33:53,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:33:53,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1129 transitions. [2022-11-16 12:33:53,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.28571428571428) internal successors, (1129), 7 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:53,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:53,706 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:53,706 INFO L175 Difference]: Start difference. First operand has 189 places, 172 transitions, 454 flow. Second operand 7 states and 1129 transitions. [2022-11-16 12:33:53,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 192 transitions, 615 flow [2022-11-16 12:33:53,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 192 transitions, 583 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 12:33:53,715 INFO L231 Difference]: Finished difference. Result has 185 places, 168 transitions, 417 flow [2022-11-16 12:33:53,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=417, PETRI_PLACES=185, PETRI_TRANSITIONS=168} [2022-11-16 12:33:53,716 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 15 predicate places. [2022-11-16 12:33:53,717 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 168 transitions, 417 flow [2022-11-16 12:33:53,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:53,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:33:53,718 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:53,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:33:53,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:33:53,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:33:53,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:53,925 INFO L85 PathProgramCache]: Analyzing trace with hash -777995549, now seen corresponding path program 1 times [2022-11-16 12:33:53,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:53,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708913022] [2022-11-16 12:33:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:53,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:54,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:54,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708913022] [2022-11-16 12:33:54,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708913022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:54,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:54,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:33:54,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513251744] [2022-11-16 12:33:54,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:54,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:33:54,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:54,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:33:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:33:54,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 193 [2022-11-16 12:33:54,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 168 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:54,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:33:54,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 193 [2022-11-16 12:33:54,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:33:56,323 INFO L130 PetriNetUnfolder]: 4441/10264 cut-off events. [2022-11-16 12:33:56,323 INFO L131 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2022-11-16 12:33:56,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18791 conditions, 10264 events. 4441/10264 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 90317 event pairs, 3050 based on Foata normal form. 0/9599 useless extension candidates. Maximal degree in co-relation 15028. Up to 3081 conditions per place. [2022-11-16 12:33:56,534 INFO L137 encePairwiseOnDemand]: 185/193 looper letters, 33 selfloop transitions, 6 changer transitions 28/209 dead transitions. [2022-11-16 12:33:56,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 209 transitions, 644 flow [2022-11-16 12:33:56,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:33:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:33:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 861 transitions. [2022-11-16 12:33:56,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8922279792746114 [2022-11-16 12:33:56,538 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 861 transitions. [2022-11-16 12:33:56,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 861 transitions. [2022-11-16 12:33:56,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:33:56,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 861 transitions. [2022-11-16 12:33:56,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 172.2) internal successors, (861), 5 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:56,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:56,545 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:56,546 INFO L175 Difference]: Start difference. First operand has 185 places, 168 transitions, 417 flow. Second operand 5 states and 861 transitions. [2022-11-16 12:33:56,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 209 transitions, 644 flow [2022-11-16 12:33:56,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 209 transitions, 630 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:33:56,556 INFO L231 Difference]: Finished difference. Result has 187 places, 169 transitions, 436 flow [2022-11-16 12:33:56,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=187, PETRI_TRANSITIONS=169} [2022-11-16 12:33:56,558 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 17 predicate places. [2022-11-16 12:33:56,559 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 169 transitions, 436 flow [2022-11-16 12:33:56,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:56,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:33:56,560 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:56,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:33:56,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:33:56,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:56,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1753096259, now seen corresponding path program 1 times [2022-11-16 12:33:56,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:56,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506653266] [2022-11-16 12:33:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:56,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:56,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:56,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506653266] [2022-11-16 12:33:56,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506653266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:56,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:56,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:33:56,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843763421] [2022-11-16 12:33:56,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:56,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:33:56,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:33:56,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:33:56,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 193 [2022-11-16 12:33:56,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 169 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:56,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:33:56,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 193 [2022-11-16 12:33:56,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:33:58,257 INFO L130 PetriNetUnfolder]: 2951/6764 cut-off events. [2022-11-16 12:33:58,258 INFO L131 PetriNetUnfolder]: For 880/1215 co-relation queries the response was YES. [2022-11-16 12:33:58,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13272 conditions, 6764 events. 2951/6764 cut-off events. For 880/1215 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 55698 event pairs, 1150 based on Foata normal form. 245/6734 useless extension candidates. Maximal degree in co-relation 12161. Up to 2075 conditions per place. [2022-11-16 12:33:58,304 INFO L137 encePairwiseOnDemand]: 185/193 looper letters, 32 selfloop transitions, 6 changer transitions 15/196 dead transitions. [2022-11-16 12:33:58,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 196 transitions, 605 flow [2022-11-16 12:33:58,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:33:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:33:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 847 transitions. [2022-11-16 12:33:58,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.877720207253886 [2022-11-16 12:33:58,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 847 transitions. [2022-11-16 12:33:58,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 847 transitions. [2022-11-16 12:33:58,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:33:58,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 847 transitions. [2022-11-16 12:33:58,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.4) internal successors, (847), 5 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:58,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:58,320 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:58,320 INFO L175 Difference]: Start difference. First operand has 187 places, 169 transitions, 436 flow. Second operand 5 states and 847 transitions. [2022-11-16 12:33:58,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 196 transitions, 605 flow [2022-11-16 12:33:58,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 196 transitions, 595 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-16 12:33:58,333 INFO L231 Difference]: Finished difference. Result has 190 places, 170 transitions, 459 flow [2022-11-16 12:33:58,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=190, PETRI_TRANSITIONS=170} [2022-11-16 12:33:58,334 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 20 predicate places. [2022-11-16 12:33:58,335 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 170 transitions, 459 flow [2022-11-16 12:33:58,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:58,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:33:58,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:58,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:33:58,337 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:33:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash -725188404, now seen corresponding path program 1 times [2022-11-16 12:33:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:58,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063643940] [2022-11-16 12:33:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:58,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:58,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:58,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063643940] [2022-11-16 12:33:58,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063643940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:58,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:58,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:33:58,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907153791] [2022-11-16 12:33:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:58,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:33:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:58,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:33:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:33:58,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 193 [2022-11-16 12:33:58,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 170 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:58,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:33:58,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 193 [2022-11-16 12:33:58,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:33:59,357 INFO L130 PetriNetUnfolder]: 1676/4329 cut-off events. [2022-11-16 12:33:59,358 INFO L131 PetriNetUnfolder]: For 1610/1650 co-relation queries the response was YES. [2022-11-16 12:33:59,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9386 conditions, 4329 events. 1676/4329 cut-off events. For 1610/1650 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 33218 event pairs, 910 based on Foata normal form. 0/4124 useless extension candidates. Maximal degree in co-relation 7868. Up to 1200 conditions per place. [2022-11-16 12:33:59,410 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 46 selfloop transitions, 11 changer transitions 4/196 dead transitions. [2022-11-16 12:33:59,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 196 transitions, 654 flow [2022-11-16 12:33:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:33:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:33:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1269 transitions. [2022-11-16 12:33:59,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8218911917098446 [2022-11-16 12:33:59,418 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1269 transitions. [2022-11-16 12:33:59,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1269 transitions. [2022-11-16 12:33:59,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:33:59,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1269 transitions. [2022-11-16 12:33:59,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 158.625) internal successors, (1269), 8 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:59,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:59,431 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:59,432 INFO L175 Difference]: Start difference. First operand has 190 places, 170 transitions, 459 flow. Second operand 8 states and 1269 transitions. [2022-11-16 12:33:59,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 196 transitions, 654 flow [2022-11-16 12:33:59,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 196 transitions, 644 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 12:33:59,442 INFO L231 Difference]: Finished difference. Result has 192 places, 169 transitions, 467 flow [2022-11-16 12:33:59,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=467, PETRI_PLACES=192, PETRI_TRANSITIONS=169} [2022-11-16 12:33:59,443 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 22 predicate places. [2022-11-16 12:33:59,444 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 169 transitions, 467 flow [2022-11-16 12:33:59,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:59,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:33:59,445 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:59,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:33:59,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:33:59,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:59,446 INFO L85 PathProgramCache]: Analyzing trace with hash -725188403, now seen corresponding path program 1 times [2022-11-16 12:33:59,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:59,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724024350] [2022-11-16 12:33:59,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:59,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:59,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724024350] [2022-11-16 12:33:59,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724024350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:59,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:59,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:33:59,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136334519] [2022-11-16 12:33:59,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:59,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:33:59,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:59,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:33:59,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:33:59,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 193 [2022-11-16 12:33:59,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 169 transitions, 467 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:59,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:33:59,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 193 [2022-11-16 12:33:59,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:34:00,550 INFO L130 PetriNetUnfolder]: 1276/3369 cut-off events. [2022-11-16 12:34:00,551 INFO L131 PetriNetUnfolder]: For 1388/1388 co-relation queries the response was YES. [2022-11-16 12:34:00,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7370 conditions, 3369 events. 1276/3369 cut-off events. For 1388/1388 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 23964 event pairs, 815 based on Foata normal form. 170/3334 useless extension candidates. Maximal degree in co-relation 5892. Up to 1202 conditions per place. [2022-11-16 12:34:00,582 INFO L137 encePairwiseOnDemand]: 183/193 looper letters, 25 selfloop transitions, 5 changer transitions 39/198 dead transitions. [2022-11-16 12:34:00,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 198 transitions, 670 flow [2022-11-16 12:34:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:34:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:34:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1122 transitions. [2022-11-16 12:34:00,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8304959289415248 [2022-11-16 12:34:00,589 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1122 transitions. [2022-11-16 12:34:00,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1122 transitions. [2022-11-16 12:34:00,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:34:00,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1122 transitions. [2022-11-16 12:34:00,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.28571428571428) internal successors, (1122), 7 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:00,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:00,602 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:00,603 INFO L175 Difference]: Start difference. First operand has 192 places, 169 transitions, 467 flow. Second operand 7 states and 1122 transitions. [2022-11-16 12:34:00,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 198 transitions, 670 flow [2022-11-16 12:34:00,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 198 transitions, 653 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:34:00,613 INFO L231 Difference]: Finished difference. Result has 191 places, 153 transitions, 414 flow [2022-11-16 12:34:00,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=191, PETRI_TRANSITIONS=153} [2022-11-16 12:34:00,616 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 21 predicate places. [2022-11-16 12:34:00,617 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 153 transitions, 414 flow [2022-11-16 12:34:00,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:00,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:34:00,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:34:00,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:34:00,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:34:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:34:00,619 INFO L85 PathProgramCache]: Analyzing trace with hash 542203543, now seen corresponding path program 1 times [2022-11-16 12:34:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:34:00,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559654885] [2022-11-16 12:34:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:34:00,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:34:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:34:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:34:00,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:34:00,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559654885] [2022-11-16 12:34:00,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559654885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:34:00,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:34:00,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:34:00,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303536886] [2022-11-16 12:34:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:34:00,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:34:00,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:34:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:34:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:34:00,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 193 [2022-11-16 12:34:00,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 153 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:00,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:34:00,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 193 [2022-11-16 12:34:00,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:34:01,281 INFO L130 PetriNetUnfolder]: 606/1644 cut-off events. [2022-11-16 12:34:01,281 INFO L131 PetriNetUnfolder]: For 409/409 co-relation queries the response was YES. [2022-11-16 12:34:01,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 1644 events. 606/1644 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9235 event pairs, 80 based on Foata normal form. 0/1634 useless extension candidates. Maximal degree in co-relation 2850. Up to 650 conditions per place. [2022-11-16 12:34:01,297 INFO L137 encePairwiseOnDemand]: 185/193 looper letters, 37 selfloop transitions, 7 changer transitions 1/174 dead transitions. [2022-11-16 12:34:01,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 174 transitions, 558 flow [2022-11-16 12:34:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:34:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:34:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1104 transitions. [2022-11-16 12:34:01,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171724648408586 [2022-11-16 12:34:01,304 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1104 transitions. [2022-11-16 12:34:01,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1104 transitions. [2022-11-16 12:34:01,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:34:01,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1104 transitions. [2022-11-16 12:34:01,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:01,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:01,315 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:01,316 INFO L175 Difference]: Start difference. First operand has 191 places, 153 transitions, 414 flow. Second operand 7 states and 1104 transitions. [2022-11-16 12:34:01,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 174 transitions, 558 flow [2022-11-16 12:34:01,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 174 transitions, 520 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-16 12:34:01,331 INFO L231 Difference]: Finished difference. Result has 171 places, 152 transitions, 391 flow [2022-11-16 12:34:01,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=391, PETRI_PLACES=171, PETRI_TRANSITIONS=152} [2022-11-16 12:34:01,333 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 1 predicate places. [2022-11-16 12:34:01,333 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 152 transitions, 391 flow [2022-11-16 12:34:01,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:01,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:34:01,335 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:34:01,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:34:01,335 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:34:01,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:34:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash -311047824, now seen corresponding path program 1 times [2022-11-16 12:34:01,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:34:01,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913026501] [2022-11-16 12:34:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:34:01,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:34:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:34:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:34:01,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:34:01,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913026501] [2022-11-16 12:34:01,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913026501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:34:01,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:34:01,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:34:01,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436473665] [2022-11-16 12:34:01,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:34:01,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:34:01,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:34:01,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:34:01,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:34:01,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 193 [2022-11-16 12:34:01,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 152 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:01,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:34:01,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 193 [2022-11-16 12:34:01,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:34:01,869 INFO L130 PetriNetUnfolder]: 341/1139 cut-off events. [2022-11-16 12:34:01,869 INFO L131 PetriNetUnfolder]: For 411/411 co-relation queries the response was YES. [2022-11-16 12:34:01,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 1139 events. 341/1139 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5753 event pairs, 100 based on Foata normal form. 150/1274 useless extension candidates. Maximal degree in co-relation 1890. Up to 371 conditions per place. [2022-11-16 12:34:01,876 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 0 selfloop transitions, 6 changer transitions 72/163 dead transitions. [2022-11-16 12:34:01,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 163 transitions, 485 flow [2022-11-16 12:34:01,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:34:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:34:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1092 transitions. [2022-11-16 12:34:01,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8082901554404145 [2022-11-16 12:34:01,882 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1092 transitions. [2022-11-16 12:34:01,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1092 transitions. [2022-11-16 12:34:01,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:34:01,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1092 transitions. [2022-11-16 12:34:01,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:01,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:01,894 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:01,894 INFO L175 Difference]: Start difference. First operand has 171 places, 152 transitions, 391 flow. Second operand 7 states and 1092 transitions. [2022-11-16 12:34:01,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 163 transitions, 485 flow [2022-11-16 12:34:01,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 469 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-16 12:34:01,900 INFO L231 Difference]: Finished difference. Result has 172 places, 91 transitions, 255 flow [2022-11-16 12:34:01,900 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=172, PETRI_TRANSITIONS=91} [2022-11-16 12:34:01,903 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-11-16 12:34:01,904 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 91 transitions, 255 flow [2022-11-16 12:34:01,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:01,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:34:01,905 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:34:01,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:34:01,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:34:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:34:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash -127192818, now seen corresponding path program 2 times [2022-11-16 12:34:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:34:01,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415865996] [2022-11-16 12:34:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:34:01,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:34:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:34:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:34:02,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:34:02,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415865996] [2022-11-16 12:34:02,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415865996] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:34:02,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631151430] [2022-11-16 12:34:02,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:34:02,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:34:02,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:34:02,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:34:02,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:34:02,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:34:02,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:34:02,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:34:02,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:34:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:34:02,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:34:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:34:02,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631151430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:34:02,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:34:02,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:34:02,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817986635] [2022-11-16 12:34:02,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:34:02,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:34:02,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:34:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:34:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:34:02,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 193 [2022-11-16 12:34:02,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 91 transitions, 255 flow. Second operand has 18 states, 18 states have (on average 145.61111111111111) internal successors, (2621), 18 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:02,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:34:02,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 193 [2022-11-16 12:34:02,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:34:03,522 INFO L130 PetriNetUnfolder]: 1/124 cut-off events. [2022-11-16 12:34:03,522 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-16 12:34:03,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 124 events. 1/124 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/126 useless extension candidates. Maximal degree in co-relation 183. Up to 7 conditions per place. [2022-11-16 12:34:03,522 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-11-16 12:34:03,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 114 transitions, 425 flow [2022-11-16 12:34:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:34:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:34:03,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3465 transitions. [2022-11-16 12:34:03,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7480569948186528 [2022-11-16 12:34:03,534 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3465 transitions. [2022-11-16 12:34:03,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3465 transitions. [2022-11-16 12:34:03,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:34:03,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3465 transitions. [2022-11-16 12:34:03,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 144.375) internal successors, (3465), 24 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:03,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 193.0) internal successors, (4825), 25 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:03,576 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 193.0) internal successors, (4825), 25 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:03,576 INFO L175 Difference]: Start difference. First operand has 172 places, 91 transitions, 255 flow. Second operand 24 states and 3465 transitions. [2022-11-16 12:34:03,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 114 transitions, 425 flow [2022-11-16 12:34:03,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 405 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-16 12:34:03,579 INFO L231 Difference]: Finished difference. Result has 116 places, 0 transitions, 0 flow [2022-11-16 12:34:03,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=116, PETRI_TRANSITIONS=0} [2022-11-16 12:34:03,580 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -54 predicate places. [2022-11-16 12:34:03,582 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 0 transitions, 0 flow [2022-11-16 12:34:03,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 145.61111111111111) internal successors, (2621), 18 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:03,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-11-16 12:34:03,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-16 12:34:03,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-16 12:34:03,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-16 12:34:03,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-16 12:34:03,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-16 12:34:03,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-11-16 12:34:03,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-11-16 12:34:03,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-11-16 12:34:03,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-16 12:34:03,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-16 12:34:03,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-16 12:34:03,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-16 12:34:03,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:34:03,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:34:03,797 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:34:03,802 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:34:03,802 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:34:03,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:34:03 BasicIcfg [2022-11-16 12:34:03,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:34:03,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:34:03,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:34:03,807 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:34:03,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:33:46" (3/4) ... [2022-11-16 12:34:03,810 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:34:03,817 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:34:03,818 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:34:03,818 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 12:34:03,828 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-16 12:34:03,828 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:34:03,829 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:34:03,829 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:34:03,901 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:34:03,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:34:03,902 INFO L158 Benchmark]: Toolchain (without parser) took 19008.31ms. Allocated memory was 115.3MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 69.3MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 290.1MB. Max. memory is 16.1GB. [2022-11-16 12:34:03,902 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:34:03,902 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.98ms. Allocated memory is still 115.3MB. Free memory was 69.1MB in the beginning and 86.2MB in the end (delta: -17.0MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-11-16 12:34:03,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.05ms. Allocated memory is still 115.3MB. Free memory was 86.2MB in the beginning and 83.8MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:34:03,903 INFO L158 Benchmark]: Boogie Preprocessor took 38.65ms. Allocated memory is still 115.3MB. Free memory was 83.8MB in the beginning and 82.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:34:03,904 INFO L158 Benchmark]: RCFGBuilder took 994.29ms. Allocated memory is still 115.3MB. Free memory was 82.0MB in the beginning and 54.1MB in the end (delta: 27.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-16 12:34:03,904 INFO L158 Benchmark]: TraceAbstraction took 17394.72ms. Allocated memory was 115.3MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 53.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 273.0MB. Max. memory is 16.1GB. [2022-11-16 12:34:03,905 INFO L158 Benchmark]: Witness Printer took 94.11ms. Allocated memory is still 1.4GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:34:03,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 423.98ms. Allocated memory is still 115.3MB. Free memory was 69.1MB in the beginning and 86.2MB in the end (delta: -17.0MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.05ms. Allocated memory is still 115.3MB. Free memory was 86.2MB in the beginning and 83.8MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.65ms. Allocated memory is still 115.3MB. Free memory was 83.8MB in the beginning and 82.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 994.29ms. Allocated memory is still 115.3MB. Free memory was 82.0MB in the beginning and 54.1MB in the end (delta: 27.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 17394.72ms. Allocated memory was 115.3MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 53.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 273.0MB. Max. memory is 16.1GB. * Witness Printer took 94.11ms. Allocated memory is still 1.4GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 171]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 171]: 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 7 procedures, 226 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.2s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 732 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 732 mSDsluCounter, 218 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 136 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1134 IncrementalHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 82 mSDtfsCounter, 1134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 586 GetRequests, 473 SyntacticMatches, 5 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=467occurred in iteration=6, InterpolantAutomatonStates: 93, 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, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1265 NumberOfCodeBlocks, 1229 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1445 ConstructedInterpolants, 0 QuantifiedInterpolants, 2129 SizeOfPredicates, 12 NumberOfNonLiveVariables, 559 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 123/266 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:34:03,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41340913-b205-45d3-ad32-ff662742a630/bin/uautomizer-tPACEb0tL8/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