./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a --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 75c86508b929748d0860a2261aae2f86897f25a70c1055933792f6abb004bc7e --- 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-b5237d8 [2022-11-21 16:28:43,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:28:43,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:28:43,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:28:43,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:28:43,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:28:43,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:28:43,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:28:43,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:28:43,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:28:43,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:28:43,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:28:43,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:28:43,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:28:43,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:28:43,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:28:43,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:28:43,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:28:43,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:28:43,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:28:43,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:28:43,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:28:43,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:28:43,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:28:43,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:28:43,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:28:43,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:28:43,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:28:43,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:28:43,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:28:43,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:28:43,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:28:43,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:28:43,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:28:43,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:28:43,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:28:43,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:28:43,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:28:43,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:28:43,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:28:43,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:28:43,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:28:43,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:28:43,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:28:43,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:28:43,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:28:43,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:28:43,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:28:43,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:28:43,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:28:43,302 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:28:43,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:28:43,302 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:28:43,302 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:28:43,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:28:43,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:28:43,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:28:43,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:28:43,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:28:43,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:28:43,304 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:28:43,304 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:28:43,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:28:43,305 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:28:43,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:28:43,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:28:43,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:28:43,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:28:43,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:28:43,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:28:43,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:28:43,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:28:43,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:28:43,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:28:43,307 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:28:43,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:28:43,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:28:43,308 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_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75c86508b929748d0860a2261aae2f86897f25a70c1055933792f6abb004bc7e [2022-11-21 16:28:43,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:28:43,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:28:43,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:28:43,618 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:28:43,619 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:28:43,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2022-11-21 16:28:46,811 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:28:47,047 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:28:47,048 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2022-11-21 16:28:47,055 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/data/c097d990e/5416710b53d44223a8dd79d98e44cfee/FLAG3323b297f [2022-11-21 16:28:47,073 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/data/c097d990e/5416710b53d44223a8dd79d98e44cfee [2022-11-21 16:28:47,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:28:47,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:28:47,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:28:47,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:28:47,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:28:47,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d823993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47, skipping insertion in model container [2022-11-21 16:28:47,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:28:47,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:28:47,373 WARN L237 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_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c[3134,3147] [2022-11-21 16:28:47,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:28:47,387 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:28:47,428 WARN L237 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_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c[3134,3147] [2022-11-21 16:28:47,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:28:47,445 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:28:47,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47 WrapperNode [2022-11-21 16:28:47,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:28:47,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:28:47,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:28:47,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:28:47,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,509 INFO L138 Inliner]: procedures = 21, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 123 [2022-11-21 16:28:47,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:28:47,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:28:47,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:28:47,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:28:47,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,536 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:28:47,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:28:47,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:28:47,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:28:47,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (1/1) ... [2022-11-21 16:28:47,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:28:47,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:28:47,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:28:47,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:28:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:28:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:28:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:28:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:28:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:28:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:28:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:28:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:28:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:28:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:28:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:28:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:28:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:28:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:28:47,641 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:28:47,773 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:28:47,775 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:28:48,066 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:28:48,207 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:28:48,219 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:28:48,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:28:48 BoogieIcfgContainer [2022-11-21 16:28:48,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:28:48,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:28:48,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:28:48,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:28:48,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:28:47" (1/3) ... [2022-11-21 16:28:48,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9c04c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:28:48, skipping insertion in model container [2022-11-21 16:28:48,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:28:47" (2/3) ... [2022-11-21 16:28:48,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9c04c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:28:48, skipping insertion in model container [2022-11-21 16:28:48,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:28:48" (3/3) ... [2022-11-21 16:28:48,235 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2022-11-21 16:28:48,244 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:28:48,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:28:48,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 16:28:48,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:28:48,372 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:28:48,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 146 transitions, 308 flow [2022-11-21 16:28:48,536 INFO L130 PetriNetUnfolder]: 9/144 cut-off events. [2022-11-21 16:28:48,536 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:28:48,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 144 events. 9/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2022-11-21 16:28:48,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 146 transitions, 308 flow [2022-11-21 16:28:48,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 125 transitions, 259 flow [2022-11-21 16:28:48,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:28:48,583 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;@25da4efd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:28:48,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-21 16:28:48,620 INFO L130 PetriNetUnfolder]: 6/87 cut-off events. [2022-11-21 16:28:48,620 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:28:48,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:28:48,621 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] [2022-11-21 16:28:48,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:28:48,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:48,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1090828570, now seen corresponding path program 1 times [2022-11-21 16:28:48,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:48,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504283794] [2022-11-21 16:28:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:48,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:49,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:49,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504283794] [2022-11-21 16:28:49,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504283794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:49,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:49,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:28:49,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30798645] [2022-11-21 16:28:49,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:49,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:28:49,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:49,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:28:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:28:49,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 146 [2022-11-21 16:28:49,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 125 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:49,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:28:49,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 146 [2022-11-21 16:28:49,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:28:49,531 INFO L130 PetriNetUnfolder]: 75/319 cut-off events. [2022-11-21 16:28:49,532 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-21 16:28:49,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 319 events. 75/319 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1159 event pairs, 54 based on Foata normal form. 6/232 useless extension candidates. Maximal degree in co-relation 342. Up to 145 conditions per place. [2022-11-21 16:28:49,539 INFO L137 encePairwiseOnDemand]: 130/146 looper letters, 42 selfloop transitions, 5 changer transitions 6/122 dead transitions. [2022-11-21 16:28:49,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 362 flow [2022-11-21 16:28:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:28:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:28:49,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 555 transitions. [2022-11-21 16:28:49,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6335616438356164 [2022-11-21 16:28:49,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 555 transitions. [2022-11-21 16:28:49,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 555 transitions. [2022-11-21 16:28:49,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:28:49,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 555 transitions. [2022-11-21 16:28:49,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:49,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:49,593 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:49,595 INFO L175 Difference]: Start difference. First operand has 124 places, 125 transitions, 259 flow. Second operand 6 states and 555 transitions. [2022-11-21 16:28:49,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 362 flow [2022-11-21 16:28:49,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 122 transitions, 356 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:28:49,609 INFO L231 Difference]: Finished difference. Result has 127 places, 115 transitions, 259 flow [2022-11-21 16:28:49,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=259, PETRI_PLACES=127, PETRI_TRANSITIONS=115} [2022-11-21 16:28:49,617 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 3 predicate places. [2022-11-21 16:28:49,617 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 115 transitions, 259 flow [2022-11-21 16:28:49,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:49,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:28:49,620 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] [2022-11-21 16:28:49,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:28:49,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:28:49,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:49,622 INFO L85 PathProgramCache]: Analyzing trace with hash 544053161, now seen corresponding path program 1 times [2022-11-21 16:28:49,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:49,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035435574] [2022-11-21 16:28:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:49,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:49,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:49,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035435574] [2022-11-21 16:28:49,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035435574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:49,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:49,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:28:49,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407683283] [2022-11-21 16:28:49,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:49,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:28:49,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:49,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:28:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:28:49,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 146 [2022-11-21 16:28:49,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 115 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:49,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:28:49,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 146 [2022-11-21 16:28:49,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:28:50,081 INFO L130 PetriNetUnfolder]: 51/239 cut-off events. [2022-11-21 16:28:50,082 INFO L131 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2022-11-21 16:28:50,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 239 events. 51/239 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 684 event pairs, 36 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 262. Up to 101 conditions per place. [2022-11-21 16:28:50,087 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 20 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2022-11-21 16:28:50,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 297 flow [2022-11-21 16:28:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:28:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 16:28:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 476 transitions. [2022-11-21 16:28:50,090 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815068493150685 [2022-11-21 16:28:50,090 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 476 transitions. [2022-11-21 16:28:50,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 476 transitions. [2022-11-21 16:28:50,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:28:50,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 476 transitions. [2022-11-21 16:28:50,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,095 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,095 INFO L175 Difference]: Start difference. First operand has 127 places, 115 transitions, 259 flow. Second operand 4 states and 476 transitions. [2022-11-21 16:28:50,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 297 flow [2022-11-21 16:28:50,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:28:50,100 INFO L231 Difference]: Finished difference. Result has 117 places, 112 transitions, 250 flow [2022-11-21 16:28:50,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=117, PETRI_TRANSITIONS=112} [2022-11-21 16:28:50,102 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -7 predicate places. [2022-11-21 16:28:50,102 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 112 transitions, 250 flow [2022-11-21 16:28:50,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:28:50,104 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] [2022-11-21 16:28:50,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:28:50,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:28:50,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash 544053162, now seen corresponding path program 1 times [2022-11-21 16:28:50,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:50,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402075215] [2022-11-21 16:28:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:50,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:50,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:50,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402075215] [2022-11-21 16:28:50,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402075215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:50,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:50,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:28:50,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839739809] [2022-11-21 16:28:50,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:50,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:28:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:50,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:28:50,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:28:50,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 146 [2022-11-21 16:28:50,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:28:50,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 146 [2022-11-21 16:28:50,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:28:50,558 INFO L130 PetriNetUnfolder]: 47/254 cut-off events. [2022-11-21 16:28:50,559 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-21 16:28:50,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 254 events. 47/254 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 792 event pairs, 21 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 380. Up to 85 conditions per place. [2022-11-21 16:28:50,561 INFO L137 encePairwiseOnDemand]: 135/146 looper letters, 41 selfloop transitions, 9 changer transitions 0/119 dead transitions. [2022-11-21 16:28:50,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 119 transitions, 370 flow [2022-11-21 16:28:50,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:28:50,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:28:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 545 transitions. [2022-11-21 16:28:50,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6221461187214612 [2022-11-21 16:28:50,563 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 545 transitions. [2022-11-21 16:28:50,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 545 transitions. [2022-11-21 16:28:50,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:28:50,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 545 transitions. [2022-11-21 16:28:50,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,568 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,568 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 250 flow. Second operand 6 states and 545 transitions. [2022-11-21 16:28:50,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 119 transitions, 370 flow [2022-11-21 16:28:50,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:28:50,572 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 287 flow [2022-11-21 16:28:50,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2022-11-21 16:28:50,573 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -4 predicate places. [2022-11-21 16:28:50,573 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 287 flow [2022-11-21 16:28:50,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:28:50,593 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] [2022-11-21 16:28:50,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:28:50,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:28:50,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:50,594 INFO L85 PathProgramCache]: Analyzing trace with hash 780724664, now seen corresponding path program 1 times [2022-11-21 16:28:50,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:50,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408216102] [2022-11-21 16:28:50,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:50,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:50,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:50,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408216102] [2022-11-21 16:28:50,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408216102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:50,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:50,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:28:50,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303900505] [2022-11-21 16:28:50,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:50,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:28:50,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:50,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:28:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:28:50,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 146 [2022-11-21 16:28:50,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:28:50,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 146 [2022-11-21 16:28:50,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:28:50,808 INFO L130 PetriNetUnfolder]: 51/233 cut-off events. [2022-11-21 16:28:50,808 INFO L131 PetriNetUnfolder]: For 59/63 co-relation queries the response was YES. [2022-11-21 16:28:50,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 233 events. 51/233 cut-off events. For 59/63 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 621 event pairs, 21 based on Foata normal form. 6/200 useless extension candidates. Maximal degree in co-relation 295. Up to 84 conditions per place. [2022-11-21 16:28:50,810 INFO L137 encePairwiseOnDemand]: 135/146 looper letters, 19 selfloop transitions, 12 changer transitions 0/120 dead transitions. [2022-11-21 16:28:50,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 361 flow [2022-11-21 16:28:50,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:28:50,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:28:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2022-11-21 16:28:50,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8082191780821918 [2022-11-21 16:28:50,813 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2022-11-21 16:28:50,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2022-11-21 16:28:50,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:28:50,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2022-11-21 16:28:50,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,819 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,819 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 287 flow. Second operand 6 states and 708 transitions. [2022-11-21 16:28:50,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 361 flow [2022-11-21 16:28:50,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 120 transitions, 348 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-21 16:28:50,824 INFO L231 Difference]: Finished difference. Result has 121 places, 117 transitions, 319 flow [2022-11-21 16:28:50,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=121, PETRI_TRANSITIONS=117} [2022-11-21 16:28:50,825 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -3 predicate places. [2022-11-21 16:28:50,825 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 117 transitions, 319 flow [2022-11-21 16:28:50,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:28:50,826 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] [2022-11-21 16:28:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:28:50,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:28:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 780724665, now seen corresponding path program 1 times [2022-11-21 16:28:50,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:50,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018086992] [2022-11-21 16:28:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:50,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:50,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:50,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018086992] [2022-11-21 16:28:50,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018086992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:50,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:50,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:28:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860317346] [2022-11-21 16:28:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:50,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:28:50,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:50,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:28:50,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:28:50,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 146 [2022-11-21 16:28:50,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 117 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:28:50,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 146 [2022-11-21 16:28:50,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:28:50,939 INFO L130 PetriNetUnfolder]: 47/221 cut-off events. [2022-11-21 16:28:50,939 INFO L131 PetriNetUnfolder]: For 61/65 co-relation queries the response was YES. [2022-11-21 16:28:50,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 221 events. 47/221 cut-off events. For 61/65 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 546 event pairs, 19 based on Foata normal form. 6/194 useless extension candidates. Maximal degree in co-relation 320. Up to 81 conditions per place. [2022-11-21 16:28:50,941 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 20 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2022-11-21 16:28:50,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 117 transitions, 369 flow [2022-11-21 16:28:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:28:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:28:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2022-11-21 16:28:50,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8424657534246576 [2022-11-21 16:28:50,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2022-11-21 16:28:50,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2022-11-21 16:28:50,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:28:50,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2022-11-21 16:28:50,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,947 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,947 INFO L175 Difference]: Start difference. First operand has 121 places, 117 transitions, 319 flow. Second operand 3 states and 369 transitions. [2022-11-21 16:28:50,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 117 transitions, 369 flow [2022-11-21 16:28:50,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 117 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:28:50,951 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 320 flow [2022-11-21 16:28:50,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2022-11-21 16:28:50,952 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -5 predicate places. [2022-11-21 16:28:50,952 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 320 flow [2022-11-21 16:28:50,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:50,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:28:50,953 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] [2022-11-21 16:28:50,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:28:50,954 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:28:50,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:50,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1567338715, now seen corresponding path program 1 times [2022-11-21 16:28:50,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:50,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981736343] [2022-11-21 16:28:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:50,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:51,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:51,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981736343] [2022-11-21 16:28:51,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981736343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:51,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:51,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:28:51,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272455021] [2022-11-21 16:28:51,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:51,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:28:51,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:51,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:28:51,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:28:51,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 146 [2022-11-21 16:28:51,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 87.16666666666667) internal successors, (523), 6 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:28:51,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 146 [2022-11-21 16:28:51,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:28:51,287 INFO L130 PetriNetUnfolder]: 44/231 cut-off events. [2022-11-21 16:28:51,287 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-21 16:28:51,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 231 events. 44/231 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 627 event pairs, 19 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 151. Up to 78 conditions per place. [2022-11-21 16:28:51,289 INFO L137 encePairwiseOnDemand]: 135/146 looper letters, 39 selfloop transitions, 12 changer transitions 0/120 dead transitions. [2022-11-21 16:28:51,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 443 flow [2022-11-21 16:28:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:28:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:28:51,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2022-11-21 16:28:51,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.617579908675799 [2022-11-21 16:28:51,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 541 transitions. [2022-11-21 16:28:51,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 541 transitions. [2022-11-21 16:28:51,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:28:51,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 541 transitions. [2022-11-21 16:28:51,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,298 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 320 flow. Second operand 6 states and 541 transitions. [2022-11-21 16:28:51,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 443 flow [2022-11-21 16:28:51,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 120 transitions, 433 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:28:51,302 INFO L231 Difference]: Finished difference. Result has 123 places, 117 transitions, 357 flow [2022-11-21 16:28:51,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=123, PETRI_TRANSITIONS=117} [2022-11-21 16:28:51,303 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -1 predicate places. [2022-11-21 16:28:51,304 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 117 transitions, 357 flow [2022-11-21 16:28:51,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.16666666666667) internal successors, (523), 6 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:28:51,305 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] [2022-11-21 16:28:51,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:28:51,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:28:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash -176382056, now seen corresponding path program 1 times [2022-11-21 16:28:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:51,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537724019] [2022-11-21 16:28:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:51,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:51,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537724019] [2022-11-21 16:28:51,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537724019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:51,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:51,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:28:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373704213] [2022-11-21 16:28:51,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:51,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:28:51,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:51,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:28:51,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:28:51,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 146 [2022-11-21 16:28:51,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 357 flow. Second operand has 7 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:28:51,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 146 [2022-11-21 16:28:51,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:28:51,641 INFO L130 PetriNetUnfolder]: 36/196 cut-off events. [2022-11-21 16:28:51,641 INFO L131 PetriNetUnfolder]: For 84/88 co-relation queries the response was YES. [2022-11-21 16:28:51,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 196 events. 36/196 cut-off events. For 84/88 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 443 event pairs, 5 based on Foata normal form. 4/180 useless extension candidates. Maximal degree in co-relation 162. Up to 59 conditions per place. [2022-11-21 16:28:51,644 INFO L137 encePairwiseOnDemand]: 134/146 looper letters, 39 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2022-11-21 16:28:51,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 123 transitions, 493 flow [2022-11-21 16:28:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:28:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:28:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2022-11-21 16:28:51,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6125244618395304 [2022-11-21 16:28:51,647 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2022-11-21 16:28:51,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2022-11-21 16:28:51,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:28:51,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2022-11-21 16:28:51,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,652 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,652 INFO L175 Difference]: Start difference. First operand has 123 places, 117 transitions, 357 flow. Second operand 7 states and 626 transitions. [2022-11-21 16:28:51,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 123 transitions, 493 flow [2022-11-21 16:28:51,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 123 transitions, 478 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:28:51,660 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 399 flow [2022-11-21 16:28:51,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2022-11-21 16:28:51,661 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 1 predicate places. [2022-11-21 16:28:51,661 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 399 flow [2022-11-21 16:28:51,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:28:51,662 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] [2022-11-21 16:28:51,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:28:51,662 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:28:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1342844596, now seen corresponding path program 1 times [2022-11-21 16:28:51,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:51,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795476105] [2022-11-21 16:28:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:51,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:51,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:51,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795476105] [2022-11-21 16:28:51,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795476105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:51,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:51,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:28:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977291457] [2022-11-21 16:28:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:51,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:28:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:28:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:28:51,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 146 [2022-11-21 16:28:51,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 399 flow. Second operand has 7 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:51,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:28:51,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 146 [2022-11-21 16:28:51,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:28:52,067 INFO L130 PetriNetUnfolder]: 39/214 cut-off events. [2022-11-21 16:28:52,068 INFO L131 PetriNetUnfolder]: For 161/163 co-relation queries the response was YES. [2022-11-21 16:28:52,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 214 events. 39/214 cut-off events. For 161/163 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 549 event pairs, 8 based on Foata normal form. 2/198 useless extension candidates. Maximal degree in co-relation 330. Up to 52 conditions per place. [2022-11-21 16:28:52,070 INFO L137 encePairwiseOnDemand]: 135/146 looper letters, 39 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2022-11-21 16:28:52,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 546 flow [2022-11-21 16:28:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:28:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:28:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 628 transitions. [2022-11-21 16:28:52,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6144814090019569 [2022-11-21 16:28:52,072 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 628 transitions. [2022-11-21 16:28:52,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 628 transitions. [2022-11-21 16:28:52,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:28:52,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 628 transitions. [2022-11-21 16:28:52,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:52,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:52,082 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:52,082 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 399 flow. Second operand 7 states and 628 transitions. [2022-11-21 16:28:52,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 546 flow [2022-11-21 16:28:52,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 515 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-11-21 16:28:52,090 INFO L231 Difference]: Finished difference. Result has 127 places, 119 transitions, 432 flow [2022-11-21 16:28:52,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=127, PETRI_TRANSITIONS=119} [2022-11-21 16:28:52,093 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 3 predicate places. [2022-11-21 16:28:52,093 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 119 transitions, 432 flow [2022-11-21 16:28:52,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:52,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:28:52,094 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] [2022-11-21 16:28:52,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:28:52,095 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:28:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1352383066, now seen corresponding path program 1 times [2022-11-21 16:28:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:52,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94829017] [2022-11-21 16:28:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:52,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:52,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94829017] [2022-11-21 16:28:52,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94829017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:52,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:52,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:28:52,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740275613] [2022-11-21 16:28:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:52,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:28:52,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:28:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:28:52,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 146 [2022-11-21 16:28:52,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 119 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:52,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:28:52,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 146 [2022-11-21 16:28:52,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:28:52,446 INFO L130 PetriNetUnfolder]: 35/202 cut-off events. [2022-11-21 16:28:52,446 INFO L131 PetriNetUnfolder]: For 212/214 co-relation queries the response was YES. [2022-11-21 16:28:52,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 202 events. 35/202 cut-off events. For 212/214 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 456 event pairs, 2 based on Foata normal form. 2/193 useless extension candidates. Maximal degree in co-relation 311. Up to 33 conditions per place. [2022-11-21 16:28:52,447 INFO L137 encePairwiseOnDemand]: 135/146 looper letters, 0 selfloop transitions, 0 changer transitions 126/126 dead transitions. [2022-11-21 16:28:52,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 126 transitions, 553 flow [2022-11-21 16:28:52,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:28:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:28:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 709 transitions. [2022-11-21 16:28:52,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6070205479452054 [2022-11-21 16:28:52,450 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 709 transitions. [2022-11-21 16:28:52,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 709 transitions. [2022-11-21 16:28:52,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:28:52,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 709 transitions. [2022-11-21 16:28:52,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:52,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:52,455 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:52,456 INFO L175 Difference]: Start difference. First operand has 127 places, 119 transitions, 432 flow. Second operand 8 states and 709 transitions. [2022-11-21 16:28:52,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 126 transitions, 553 flow [2022-11-21 16:28:52,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 509 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-11-21 16:28:52,460 INFO L231 Difference]: Finished difference. Result has 126 places, 0 transitions, 0 flow [2022-11-21 16:28:52,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=126, PETRI_TRANSITIONS=0} [2022-11-21 16:28:52,460 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 2 predicate places. [2022-11-21 16:28:52,461 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 0 transitions, 0 flow [2022-11-21 16:28:52,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:52,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-21 16:28:52,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-21 16:28:52,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-21 16:28:52,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-21 16:28:52,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-21 16:28:52,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-21 16:28:52,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-21 16:28:52,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-21 16:28:52,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-21 16:28:52,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-21 16:28:52,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-21 16:28:52,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-21 16:28:52,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-21 16:28:52,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-21 16:28:52,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-21 16:28:52,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-21 16:28:52,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-21 16:28:52,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-21 16:28:52,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:28:52,468 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:28:52,473 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 16:28:52,473 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:28:52,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:28:52 BasicIcfg [2022-11-21 16:28:52,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:28:52,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:28:52,479 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:28:52,479 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:28:52,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:28:48" (3/4) ... [2022-11-21 16:28:52,482 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:28:52,487 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 16:28:52,487 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 16:28:52,492 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-21 16:28:52,492 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 16:28:52,493 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:28:52,493 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:28:52,527 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:28:52,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:28:52,528 INFO L158 Benchmark]: Toolchain (without parser) took 5447.00ms. Allocated memory was 172.0MB in the beginning and 216.0MB in the end (delta: 44.0MB). Free memory was 133.8MB in the beginning and 82.3MB in the end (delta: 51.5MB). Peak memory consumption was 96.0MB. Max. memory is 16.1GB. [2022-11-21 16:28:52,528 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:28:52,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.37ms. Allocated memory is still 172.0MB. Free memory was 133.8MB in the beginning and 122.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:28:52,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.97ms. Allocated memory is still 172.0MB. Free memory was 122.4MB in the beginning and 120.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:28:52,529 INFO L158 Benchmark]: Boogie Preprocessor took 29.91ms. Allocated memory is still 172.0MB. Free memory was 120.7MB in the beginning and 119.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:28:52,530 INFO L158 Benchmark]: RCFGBuilder took 681.75ms. Allocated memory is still 172.0MB. Free memory was 119.1MB in the beginning and 98.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-21 16:28:52,530 INFO L158 Benchmark]: TraceAbstraction took 4253.46ms. Allocated memory was 172.0MB in the beginning and 216.0MB in the end (delta: 44.0MB). Free memory was 97.2MB in the beginning and 85.5MB in the end (delta: 11.8MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2022-11-21 16:28:52,530 INFO L158 Benchmark]: Witness Printer took 48.95ms. Allocated memory is still 216.0MB. Free memory was 85.5MB in the beginning and 82.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:28:52,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.37ms. Allocated memory is still 172.0MB. Free memory was 133.8MB in the beginning and 122.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.97ms. Allocated memory is still 172.0MB. Free memory was 122.4MB in the beginning and 120.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.91ms. Allocated memory is still 172.0MB. Free memory was 120.7MB in the beginning and 119.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 681.75ms. Allocated memory is still 172.0MB. Free memory was 119.1MB in the beginning and 98.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4253.46ms. Allocated memory was 172.0MB in the beginning and 216.0MB in the end (delta: 44.0MB). Free memory was 97.2MB in the beginning and 85.5MB in the end (delta: 11.8MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. * Witness Printer took 48.95ms. Allocated memory is still 216.0MB. Free memory was 85.5MB in the beginning and 82.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 449 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 449 mSDsluCounter, 235 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 578 IncrementalHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 167 mSDtfsCounter, 578 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=432occurred in iteration=8, InterpolantAutomatonStates: 53, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 731 NumberOfCodeBlocks, 731 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 722 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 16:28:52,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4d52-efc1-410a-a12c-c22f6a32d1ab/bin/uautomizer-vX5HgA9Q3a/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