./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:21:39,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:21:39,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:21:39,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:21:39,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:21:39,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:21:39,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:21:39,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:21:39,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:21:39,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:21:39,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:21:39,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:21:39,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:21:39,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:21:39,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:21:39,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:21:39,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:21:39,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:21:39,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:21:39,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:21:39,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:21:39,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:21:39,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:21:39,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:21:39,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:21:39,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:21:39,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:21:39,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:21:39,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:21:39,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:21:39,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:21:39,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:21:39,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:21:39,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:21:39,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:21:39,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:21:39,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:21:39,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:21:39,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:21:39,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:21:39,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:21:39,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:21:39,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:21:39,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:21:39,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:21:39,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:21:39,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:21:39,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:21:39,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:21:39,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:21:39,338 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:21:39,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:21:39,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:21:39,339 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:21:39,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:21:39,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:21:39,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:21:39,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:21:39,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:21:39,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:21:39,341 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:21:39,341 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:21:39,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:21:39,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:21:39,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:21:39,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:21:39,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:21:39,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:21:39,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:21:39,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:21:39,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:21:39,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:21:39,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:21:39,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:21:39,344 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:21:39,345 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:21:39,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:21:39,345 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_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 [2022-11-16 12:21:39,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:21:39,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:21:39,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:21:39,728 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:21:39,729 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:21:39,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-16 12:21:39,819 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/data/5e4bf3a93/797f7a3f1d57418d9bc5be8cdeeb78ff/FLAGc5626fd78 [2022-11-16 12:21:40,353 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:21:40,353 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-16 12:21:40,363 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/data/5e4bf3a93/797f7a3f1d57418d9bc5be8cdeeb78ff/FLAGc5626fd78 [2022-11-16 12:21:40,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/data/5e4bf3a93/797f7a3f1d57418d9bc5be8cdeeb78ff [2022-11-16 12:21:40,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:21:40,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:21:40,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:21:40,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:21:40,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:21:40,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:21:40" (1/1) ... [2022-11-16 12:21:40,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3661ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:40, skipping insertion in model container [2022-11-16 12:21:40,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:21:40" (1/1) ... [2022-11-16 12:21:40,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:21:40,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:21:41,023 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-16 12:21:41,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:21:41,063 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:21:41,109 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-16 12:21:41,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:21:41,151 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:21:41,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41 WrapperNode [2022-11-16 12:21:41,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:21:41,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:21:41,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:21:41,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:21:41,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,217 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 395 [2022-11-16 12:21:41,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:21:41,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:21:41,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:21:41,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:21:41,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,285 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:21:41,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:21:41,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:21:41,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:21:41,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (1/1) ... [2022-11-16 12:21:41,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:21:41,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:21:41,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:21:41,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:21:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:21:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:21:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:21:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:21:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:21:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:21:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:21:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:21:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:21:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:21:41,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:21:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:21:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:21:41,393 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:21:41,550 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:21:41,552 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:21:42,413 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:21:42,456 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:21:42,457 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:21:42,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:21:42 BoogieIcfgContainer [2022-11-16 12:21:42,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:21:42,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:21:42,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:21:42,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:21:42,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:21:40" (1/3) ... [2022-11-16 12:21:42,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290e2760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:21:42, skipping insertion in model container [2022-11-16 12:21:42,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:21:41" (2/3) ... [2022-11-16 12:21:42,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290e2760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:21:42, skipping insertion in model container [2022-11-16 12:21:42,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:21:42" (3/3) ... [2022-11-16 12:21:42,471 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-11-16 12:21:42,480 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:21:42,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:21:42,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-11-16 12:21:42,492 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:21:42,680 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:21:42,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 583 transitions, 1182 flow [2022-11-16 12:21:43,062 INFO L130 PetriNetUnfolder]: 44/581 cut-off events. [2022-11-16 12:21:43,063 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:21:43,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 581 events. 44/581 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1854 event pairs, 0 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2022-11-16 12:21:43,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 583 transitions, 1182 flow [2022-11-16 12:21:43,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 526 places, 562 transitions, 1133 flow [2022-11-16 12:21:43,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:21:43,129 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;@3b8f9f1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:21:43,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2022-11-16 12:21:43,157 INFO L130 PetriNetUnfolder]: 3/87 cut-off events. [2022-11-16 12:21:43,158 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:21:43,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:21:43,159 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] [2022-11-16 12:21:43,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-16 12:21:43,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:43,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1799130742, now seen corresponding path program 1 times [2022-11-16 12:21:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:43,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096445178] [2022-11-16 12:21:43,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:43,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:43,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:43,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096445178] [2022-11-16 12:21:43,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096445178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:21:43,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:21:43,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:21:43,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900355415] [2022-11-16 12:21:43,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:43,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:21:43,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:43,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:21:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:21:43,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-16 12:21:43,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 562 transitions, 1133 flow. Second operand has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:43,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:21:43,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-16 12:21:43,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:21:44,210 INFO L130 PetriNetUnfolder]: 41/1004 cut-off events. [2022-11-16 12:21:44,211 INFO L131 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2022-11-16 12:21:44,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 1004 events. 41/1004 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5132 event pairs, 0 based on Foata normal form. 52/872 useless extension candidates. Maximal degree in co-relation 590. Up to 16 conditions per place. [2022-11-16 12:21:44,293 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 22 selfloop transitions, 4 changer transitions 3/551 dead transitions. [2022-11-16 12:21:44,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 551 transitions, 1172 flow [2022-11-16 12:21:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:21:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:21:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2785 transitions. [2022-11-16 12:21:44,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9554030874785592 [2022-11-16 12:21:44,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2785 transitions. [2022-11-16 12:21:44,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2785 transitions. [2022-11-16 12:21:44,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:21:44,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2785 transitions. [2022-11-16 12:21:44,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 557.0) internal successors, (2785), 5 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:44,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:44,359 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:44,361 INFO L175 Difference]: Start difference. First operand has 526 places, 562 transitions, 1133 flow. Second operand 5 states and 2785 transitions. [2022-11-16 12:21:44,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 551 transitions, 1172 flow [2022-11-16 12:21:44,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 551 transitions, 1162 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:21:44,396 INFO L231 Difference]: Finished difference. Result has 530 places, 540 transitions, 1108 flow [2022-11-16 12:21:44,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1108, PETRI_PLACES=530, PETRI_TRANSITIONS=540} [2022-11-16 12:21:44,405 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 4 predicate places. [2022-11-16 12:21:44,405 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 540 transitions, 1108 flow [2022-11-16 12:21:44,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:44,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:21:44,408 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:21:44,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:21:44,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-16 12:21:44,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash -183066795, now seen corresponding path program 1 times [2022-11-16 12:21:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:44,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547647209] [2022-11-16 12:21:44,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:44,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:44,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:44,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547647209] [2022-11-16 12:21:44,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547647209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:44,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856632817] [2022-11-16 12:21:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:44,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:44,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:21:44,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:21:44,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:21:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:44,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:21:44,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:21:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:44,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:21:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:45,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856632817] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:21:45,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:21:45,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:21:45,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810694749] [2022-11-16 12:21:45,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:21:45,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:21:45,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:45,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:21:45,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:21:45,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-16 12:21:45,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 540 transitions, 1108 flow. Second operand has 12 states, 12 states have (on average 545.6666666666666) internal successors, (6548), 12 states have internal predecessors, (6548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:45,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:21:45,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-16 12:21:45,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:21:46,355 INFO L130 PetriNetUnfolder]: 101/2391 cut-off events. [2022-11-16 12:21:46,355 INFO L131 PetriNetUnfolder]: For 16/21 co-relation queries the response was YES. [2022-11-16 12:21:46,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 2391 events. 101/2391 cut-off events. For 16/21 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 17704 event pairs, 0 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 1932. Up to 11 conditions per place. [2022-11-16 12:21:46,434 INFO L137 encePairwiseOnDemand]: 576/583 looper letters, 43 selfloop transitions, 18 changer transitions 0/583 dead transitions. [2022-11-16 12:21:46,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 583 transitions, 1354 flow [2022-11-16 12:21:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:21:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:21:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 9838 transitions. [2022-11-16 12:21:46,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9374880884314847 [2022-11-16 12:21:46,451 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 9838 transitions. [2022-11-16 12:21:46,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 9838 transitions. [2022-11-16 12:21:46,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:21:46,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 9838 transitions. [2022-11-16 12:21:46,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 546.5555555555555) internal successors, (9838), 18 states have internal predecessors, (9838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:46,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 583.0) internal successors, (11077), 19 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:46,591 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 583.0) internal successors, (11077), 19 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:46,591 INFO L175 Difference]: Start difference. First operand has 530 places, 540 transitions, 1108 flow. Second operand 18 states and 9838 transitions. [2022-11-16 12:21:46,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 583 transitions, 1354 flow [2022-11-16 12:21:46,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 583 transitions, 1352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:21:46,602 INFO L231 Difference]: Finished difference. Result has 547 places, 552 transitions, 1212 flow [2022-11-16 12:21:46,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1212, PETRI_PLACES=547, PETRI_TRANSITIONS=552} [2022-11-16 12:21:46,604 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 21 predicate places. [2022-11-16 12:21:46,605 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 552 transitions, 1212 flow [2022-11-16 12:21:46,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 545.6666666666666) internal successors, (6548), 12 states have internal predecessors, (6548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:46,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:21:46,609 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:21:46,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:21:46,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:46,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-16 12:21:46,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:46,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1380102105, now seen corresponding path program 1 times [2022-11-16 12:21:46,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:46,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317770153] [2022-11-16 12:21:46,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:46,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:47,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:47,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317770153] [2022-11-16 12:21:47,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317770153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:47,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426938004] [2022-11-16 12:21:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:47,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:47,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:21:47,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:21:47,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:21:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:47,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:21:47,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:21:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:47,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:21:47,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426938004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:21:47,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:21:47,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:21:47,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969049710] [2022-11-16 12:21:47,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:47,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:21:47,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:47,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:21:47,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:21:47,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-16 12:21:47,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 552 transitions, 1212 flow. Second operand has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:47,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:21:47,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-16 12:21:47,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:21:48,313 INFO L130 PetriNetUnfolder]: 101/2387 cut-off events. [2022-11-16 12:21:48,313 INFO L131 PetriNetUnfolder]: For 52/57 co-relation queries the response was YES. [2022-11-16 12:21:48,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 2387 events. 101/2387 cut-off events. For 52/57 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 17685 event pairs, 0 based on Foata normal form. 4/1946 useless extension candidates. Maximal degree in co-relation 2000. Up to 28 conditions per place. [2022-11-16 12:21:48,390 INFO L137 encePairwiseOnDemand]: 578/583 looper letters, 23 selfloop transitions, 11 changer transitions 0/556 dead transitions. [2022-11-16 12:21:48,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 556 transitions, 1275 flow [2022-11-16 12:21:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:21:48,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:21:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3827 transitions. [2022-11-16 12:21:48,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9377603528546925 [2022-11-16 12:21:48,400 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3827 transitions. [2022-11-16 12:21:48,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3827 transitions. [2022-11-16 12:21:48,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:21:48,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3827 transitions. [2022-11-16 12:21:48,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 546.7142857142857) internal successors, (3827), 7 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:48,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:48,436 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:48,436 INFO L175 Difference]: Start difference. First operand has 547 places, 552 transitions, 1212 flow. Second operand 7 states and 3827 transitions. [2022-11-16 12:21:48,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 556 transitions, 1275 flow [2022-11-16 12:21:48,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 556 transitions, 1243 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 12:21:48,456 INFO L231 Difference]: Finished difference. Result has 543 places, 548 transitions, 1175 flow [2022-11-16 12:21:48,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1175, PETRI_PLACES=543, PETRI_TRANSITIONS=548} [2022-11-16 12:21:48,459 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 17 predicate places. [2022-11-16 12:21:48,459 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 548 transitions, 1175 flow [2022-11-16 12:21:48,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:48,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:21:48,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:21:48,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:21:48,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa49996c-a0bd-47e4-934d-296674c2950b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:48,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-16 12:21:48,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:48,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1846906963, now seen corresponding path program 1 times [2022-11-16 12:21:48,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:48,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172389360] [2022-11-16 12:21:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:48,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:48,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172389360] [2022-11-16 12:21:48,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172389360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:21:48,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:21:48,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:21:48,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141097246] [2022-11-16 12:21:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:21:48,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:48,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:21:48,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:21:48,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-11-16 12:21:48,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 548 transitions, 1175 flow. Second operand has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:48,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:21:48,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-11-16 12:21:48,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:21:52,544 INFO L130 PetriNetUnfolder]: 1216/8132 cut-off events. [2022-11-16 12:21:52,544 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-16 12:21:52,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13156 conditions, 8132 events. 1216/8132 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 80978 event pairs, 140 based on Foata normal form. 0/6807 useless extension candidates. Maximal degree in co-relation 10521. Up to 966 conditions per place. [2022-11-16 12:21:52,714 INFO L137 encePairwiseOnDemand]: 559/583 looper letters, 195 selfloop transitions, 31 changer transitions 0/683 dead transitions. [2022-11-16 12:21:52,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 683 transitions, 1911 flow [2022-11-16 12:21:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:21:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:21:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4431 transitions. [2022-11-16 12:21:52,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8444825614636935 [2022-11-16 12:21:52,724 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4431 transitions. [2022-11-16 12:21:52,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4431 transitions. [2022-11-16 12:21:52,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:21:52,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4431 transitions. [2022-11-16 12:21:52,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.3333333333333) internal successors, (4431), 9 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:52,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:52,747 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:52,747 INFO L175 Difference]: Start difference. First operand has 543 places, 548 transitions, 1175 flow. Second operand 9 states and 4431 transitions. [2022-11-16 12:21:52,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 683 transitions, 1911 flow [2022-11-16 12:21:52,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 683 transitions, 1897 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:21:52,761 INFO L231 Difference]: Finished difference. Result has 553 places, 572 transitions, 1375 flow [2022-11-16 12:21:52,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=553, PETRI_TRANSITIONS=572} [2022-11-16 12:21:52,763 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 27 predicate places. [2022-11-16 12:21:52,764 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 572 transitions, 1375 flow [2022-11-16 12:21:52,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:52,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:21:52,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:21:52,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:21:52,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-16 12:21:52,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:52,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1419539598, now seen corresponding path program 1 times [2022-11-16 12:21:52,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:52,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950521563] [2022-11-16 12:21:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:52,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:52,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:52,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950521563] [2022-11-16 12:21:52,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950521563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:21:52,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:21:52,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:21:52,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423017714] [2022-11-16 12:21:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:21:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:21:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:21:52,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-11-16 12:21:52,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 572 transitions, 1375 flow. Second operand has 4 states, 4 states have (on average 464.75) internal successors, (1859), 4 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:52,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:21:52,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-11-16 12:21:52,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:21:57,156 INFO L130 PetriNetUnfolder]: 1701/11567 cut-off events. [2022-11-16 12:21:57,156 INFO L131 PetriNetUnfolder]: For 1339/1339 co-relation queries the response was YES. [2022-11-16 12:21:57,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 11567 events. 1701/11567 cut-off events. For 1339/1339 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 125314 event pairs, 660 based on Foata normal form. 160/10107 useless extension candidates. Maximal degree in co-relation 15716. Up to 2166 conditions per place. [2022-11-16 12:21:57,476 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 126 selfloop transitions, 22 changer transitions 0/609 dead transitions. [2022-11-16 12:21:57,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 609 transitions, 1742 flow [2022-11-16 12:21:57,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:21:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:21:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1994 transitions. [2022-11-16 12:21:57,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8550600343053173 [2022-11-16 12:21:57,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1994 transitions. [2022-11-16 12:21:57,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1994 transitions. [2022-11-16 12:21:57,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:21:57,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1994 transitions. [2022-11-16 12:21:57,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 498.5) internal successors, (1994), 4 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:57,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:57,497 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:57,498 INFO L175 Difference]: Start difference. First operand has 553 places, 572 transitions, 1375 flow. Second operand 4 states and 1994 transitions. [2022-11-16 12:21:57,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 609 transitions, 1742 flow [2022-11-16 12:21:57,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 609 transitions, 1740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:21:57,528 INFO L231 Difference]: Finished difference. Result has 554 places, 578 transitions, 1509 flow [2022-11-16 12:21:57,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1509, PETRI_PLACES=554, PETRI_TRANSITIONS=578} [2022-11-16 12:21:57,532 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 28 predicate places. [2022-11-16 12:21:57,533 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 578 transitions, 1509 flow [2022-11-16 12:21:57,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 464.75) internal successors, (1859), 4 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:57,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:21:57,534 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:21:57,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:21:57,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-16 12:21:57,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:57,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1734405876, now seen corresponding path program 1 times [2022-11-16 12:21:57,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:57,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292550797] [2022-11-16 12:21:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:57,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:57,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:57,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292550797] [2022-11-16 12:21:57,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292550797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:21:57,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:21:57,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:21:57,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90306275] [2022-11-16 12:21:57,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:57,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:21:57,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:57,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:21:57,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:21:57,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 583 [2022-11-16 12:21:57,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 578 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 514.7777777777778) internal successors, (4633), 9 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:57,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:21:57,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 583 [2022-11-16 12:21:57,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:07,694 INFO L130 PetriNetUnfolder]: 2588/46589 cut-off events. [2022-11-16 12:22:07,694 INFO L131 PetriNetUnfolder]: For 1081/1101 co-relation queries the response was YES. [2022-11-16 12:22:08,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49880 conditions, 46589 events. 2588/46589 cut-off events. For 1081/1101 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 666236 event pairs, 443 based on Foata normal form. 0/37201 useless extension candidates. Maximal degree in co-relation 48628. Up to 987 conditions per place. [2022-11-16 12:22:08,182 INFO L137 encePairwiseOnDemand]: 571/583 looper letters, 51 selfloop transitions, 11 changer transitions 0/594 dead transitions. [2022-11-16 12:22:08,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 594 transitions, 1671 flow [2022-11-16 12:22:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:22:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:22:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5689 transitions. [2022-11-16 12:22:08,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8871043193513176 [2022-11-16 12:22:08,202 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5689 transitions. [2022-11-16 12:22:08,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5689 transitions. [2022-11-16 12:22:08,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:08,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5689 transitions. [2022-11-16 12:22:08,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 517.1818181818181) internal successors, (5689), 11 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:08,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:08,248 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:08,248 INFO L175 Difference]: Start difference. First operand has 554 places, 578 transitions, 1509 flow. Second operand 11 states and 5689 transitions. [2022-11-16 12:22:08,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 594 transitions, 1671 flow [2022-11-16 12:22:08,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 594 transitions, 1671 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:22:08,276 INFO L231 Difference]: Finished difference. Result has 570 places, 583 transitions, 1567 flow [2022-11-16 12:22:08,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1567, PETRI_PLACES=570, PETRI_TRANSITIONS=583} [2022-11-16 12:22:08,279 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 44 predicate places. [2022-11-16 12:22:08,279 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 583 transitions, 1567 flow [2022-11-16 12:22:08,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 514.7777777777778) internal successors, (4633), 9 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:08,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:08,282 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:08,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:22:08,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-16 12:22:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1421579108, now seen corresponding path program 1 times [2022-11-16 12:22:08,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:08,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596063148] [2022-11-16 12:22:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:08,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:08,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596063148] [2022-11-16 12:22:08,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596063148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:08,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:08,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:22:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952167278] [2022-11-16 12:22:08,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:08,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:22:08,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:08,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:22:08,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:22:08,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-11-16 12:22:08,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 583 transitions, 1567 flow. Second operand has 6 states, 6 states have (on average 469.1666666666667) internal successors, (2815), 6 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:08,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:08,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-11-16 12:22:08,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:20,366 INFO L130 PetriNetUnfolder]: 4883/23819 cut-off events. [2022-11-16 12:22:20,366 INFO L131 PetriNetUnfolder]: For 4764/4786 co-relation queries the response was YES. [2022-11-16 12:22:20,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34762 conditions, 23819 events. 4883/23819 cut-off events. For 4764/4786 co-relation queries the response was YES. Maximal size of possible extension queue 2497. Compared 353359 event pairs, 616 based on Foata normal form. 0/17065 useless extension candidates. Maximal degree in co-relation 31352. Up to 4180 conditions per place. [2022-11-16 12:22:21,061 INFO L137 encePairwiseOnDemand]: 559/583 looper letters, 194 selfloop transitions, 31 changer transitions 0/716 dead transitions. [2022-11-16 12:22:21,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 716 transitions, 2289 flow [2022-11-16 12:22:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:22:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:22:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4429 transitions. [2022-11-16 12:22:21,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441013912712025 [2022-11-16 12:22:21,078 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4429 transitions. [2022-11-16 12:22:21,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4429 transitions. [2022-11-16 12:22:21,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:21,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4429 transitions. [2022-11-16 12:22:21,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.1111111111111) internal successors, (4429), 9 states have internal predecessors, (4429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:21,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:21,111 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:21,111 INFO L175 Difference]: Start difference. First operand has 570 places, 583 transitions, 1567 flow. Second operand 9 states and 4429 transitions. [2022-11-16 12:22:21,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 716 transitions, 2289 flow [2022-11-16 12:22:21,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 716 transitions, 2282 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:22:21,136 INFO L231 Difference]: Finished difference. Result has 582 places, 607 transitions, 1774 flow [2022-11-16 12:22:21,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1774, PETRI_PLACES=582, PETRI_TRANSITIONS=607} [2022-11-16 12:22:21,138 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 56 predicate places. [2022-11-16 12:22:21,138 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 607 transitions, 1774 flow [2022-11-16 12:22:21,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.1666666666667) internal successors, (2815), 6 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:21,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:21,140 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:21,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:22:21,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-16 12:22:21,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1119277759, now seen corresponding path program 1 times [2022-11-16 12:22:21,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:21,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777885342] [2022-11-16 12:22:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:21,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:21,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:21,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777885342] [2022-11-16 12:22:21,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777885342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:21,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:21,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:22:21,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723987805] [2022-11-16 12:22:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:21,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:22:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:22:21,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:22:21,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-11-16 12:22:21,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 607 transitions, 1774 flow. Second operand has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:21,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:21,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-11-16 12:22:21,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:37,845 INFO L130 PetriNetUnfolder]: 6847/33721 cut-off events. [2022-11-16 12:22:37,845 INFO L131 PetriNetUnfolder]: For 9941/9963 co-relation queries the response was YES. [2022-11-16 12:22:38,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51474 conditions, 33721 events. 6847/33721 cut-off events. For 9941/9963 co-relation queries the response was YES. Maximal size of possible extension queue 3520. Compared 524994 event pairs, 572 based on Foata normal form. 432/25152 useless extension candidates. Maximal degree in co-relation 46272. Up to 6933 conditions per place. [2022-11-16 12:22:39,006 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 125 selfloop transitions, 22 changer transitions 0/643 dead transitions. [2022-11-16 12:22:39,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 643 transitions, 2134 flow [2022-11-16 12:22:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:22:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:22:39,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1993 transitions. [2022-11-16 12:22:39,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8546312178387651 [2022-11-16 12:22:39,013 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1993 transitions. [2022-11-16 12:22:39,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1993 transitions. [2022-11-16 12:22:39,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:39,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1993 transitions. [2022-11-16 12:22:39,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 498.25) internal successors, (1993), 4 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:39,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:39,028 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:39,028 INFO L175 Difference]: Start difference. First operand has 582 places, 607 transitions, 1774 flow. Second operand 4 states and 1993 transitions. [2022-11-16 12:22:39,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 643 transitions, 2134 flow [2022-11-16 12:22:39,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 643 transitions, 2132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:22:39,365 INFO L231 Difference]: Finished difference. Result has 583 places, 613 transitions, 1908 flow [2022-11-16 12:22:39,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=583, PETRI_TRANSITIONS=613} [2022-11-16 12:22:39,370 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 57 predicate places. [2022-11-16 12:22:39,371 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 613 transitions, 1908 flow [2022-11-16 12:22:39,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:39,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:39,372 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:39,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:22:39,372 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-16 12:22:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:39,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2034667715, now seen corresponding path program 1 times [2022-11-16 12:22:39,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:39,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714065497] [2022-11-16 12:22:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:39,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:39,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:39,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714065497] [2022-11-16 12:22:39,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714065497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:39,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:39,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:22:39,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635897408] [2022-11-16 12:22:39,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:39,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:22:39,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:39,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:22:39,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:22:39,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 583 [2022-11-16 12:22:39,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 613 transitions, 1908 flow. Second operand has 9 states, 9 states have (on average 514.8888888888889) internal successors, (4634), 9 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:39,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:39,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 583 [2022-11-16 12:22:39,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand